phosphorus

Phosphorus is an essential component of living systems and is found in nervous tissue, bones and cell protoplasm. Phosphorus exists in several allotropic forms including white (or yellow), red, and black (or violet). White phosphorus has two modifications. Ordinary phosphorus is a waxy white solid. When pure, it is colorless and transparent. It is insoluble in water, but soluble in carbon disulphide. It catches fire spontaneously in air, burning to P4O10, often misnamed as phosphorus pentoxide. When exposed to sunlight, or when heated in its own vapor to 250°C, it is converted to the red variety. This form does not ignite spontaneously andd it is a little less dangerous than white phosphorus. The red modification is fairly stable and sublimes with a vapor pressure of 1 atmosphere at 417°C.  ·   [|Symbol] : P  ·    [|Atomic number] : 15  ·   [|Atomic weight] : 30.973762 (2)  ·   [|Standard state] : solid at 298 K  ·    [|CAS Registry ID] : 7723-14-0  ·  Most common mass number: 31 ||  ·    [|Group in periodic table] : 15  ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'"> [|Group name] : Pnictogen <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'"> [|Period in periodic table] : 3 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'"> [|Block in periodic table] : p-block <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'"> [|Color] : colorless/red/silvery white <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'"> [|Classification] : Non-metallic || <span style="FONT-FAMILY: 'Verdana','sans-serif'">
 * __ Phosphorus  __**
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'"> [|Name] : Phosphorus
 * <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'"> [|Name] : Phosphorus

Physical Properties of Phosphorus
<span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Atomic Mass Average] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 30.97376 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">Boiling Point]] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 553<span style="FONT-FAMILY: 'Calibri','sans-serif'">[|K] 280°<span style="FONT-FAMILY: 'Calibri','sans-serif'">[|C] 536°<span style="FONT-FAMILY: 'Calibri','sans-serif'">[|F] <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">Coefficient of lineal thermal expansion]] /K ****<span style="FONT-SIZE: 7pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">-1 ****<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 124.5E <span style="FONT-SIZE: 7pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">-6 <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Conductivity]  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Density] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 1.82g/cc @ 300K <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Description: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> <span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Soft white waxy solid, brownish-red powder or black solid. <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Elastic Modulus: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 'Courier New'; mso-ansi-language: EN"> o  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Bulk: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 11/GPa <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Enthalpy of Atomization: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 314.6 kJ/mole @ 25°C <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Enthalpy of Fusion: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 0.63 kJ/mole <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Enthalpy of Vaporization: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 12.43 kJ/mole <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Flammablity Class: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> Flammable solid <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Freezing Point: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> //<span style="FONT-FAMILY: 'Verdana','sans-serif'">see melting point // <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">Heat of Vaporization]] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 12.129kJ/mol <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> · **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">Melting Point]] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 317.45<span style="FONT-FAMILY: 'Calibri','sans-serif'">[|K] 44.3°<span style="FONT-FAMILY: 'Calibri','sans-serif'">[|C] 111.7°<span style="FONT-FAMILY: 'Calibri','sans-serif'">[|F] <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Molar Volume: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 17 cm <span style="FONT-SIZE: 7pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">3 <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">/mole <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Optical Refractive Index: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 1.001212 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Physical State (at 20°C & 1atm): **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> Solid <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">Specific Heat]] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 0.77J/gK <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">Vapor Pressure]]  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> = 20.8Pa@44.3°<span style="FONT-FAMILY: 'Calibri','sans-serif'">[|C]
 * <span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Electrical: **<span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 1.0E <span style="FONT-SIZE: 7pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">-17 <span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 10 <span style="FONT-SIZE: 7pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">6 <span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">/cm <span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'; mso-no-proof: yes"> <span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">
 * <span style="FONT-FAMILY: 'Verdana','sans-serif'">Thermal: ** 0.00235 W/cmK

Chemical Properties of Phosphorus
<span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">Electrochemical Equivalent]] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 0.23113g/amp-hr <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">Electron Work Function]] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Electronegativity] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 2.19 (Pauling); 2.06 (Allrod Rochow) <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">Heat of Fusion]] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 0.657kJ/mol <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Incompatibilities: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> <span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Air, oxidizers (including elemental sulfur & strong caustics), halogens <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN">Ionization Potential **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 'Courier New'; mso-ansi-language: EN"> o  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">Ionization Potential|First]] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 10.486 <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 'Courier New'; mso-ansi-language: EN"> o **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'"> Ionization Potential|Second]] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 19.725 <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 'Courier New'; mso-ansi-language: EN"> o **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'"> Ionization Potential|Third]] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 30.18 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Valence Electron Potential (-eV)] : **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-ansi-language: EN"> 190 ** number of isotopes: ** <span style="FONT-SIZE: 8pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> **1**
 * <span style="FONT-FAMILY: 'Verdana','sans-serif'">Ion <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">Coordination type <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">Radius / pm <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> ||
 * <span style="FONT-FAMILY: 'Verdana','sans-serif'">P(V) <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">4-coordinate, tetrahedral <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">31 <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> ||
 * <span style="FONT-FAMILY: 'Verdana','sans-serif'">P(III) <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">6-coordinate, octahedral <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">58 <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> ||
 * <span style="FONT-FAMILY: 'Verdana','sans-serif'">P(V) <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">6-coordinate, octahedral <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">52 <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> ||

[|Pauling] ionic radii<span style="FONT-FAMILY: 'Georgia','serif'">
<span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Phosphine] : PH3 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Diphosphorus tetrahydride] : P2H4
 * <span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'">This table shows Pauling radii for phosphorus ||
 * **<span style="FONT-FAMILY: 'Verdana','sans-serif'">Ion **<span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || **<span style="FONT-FAMILY: 'Verdana','sans-serif'">Pauling radius / pm **<span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> ||
 * <span style="FONT-FAMILY: 'Verdana','sans-serif'">P(I) <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">59 <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> ||
 * <span style="FONT-FAMILY: 'Verdana','sans-serif'">P(V) <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">34 <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> ||
 * <span style="FONT-FAMILY: 'Verdana','sans-serif'">P(-I) <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">279 <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> ||
 * <span style="FONT-FAMILY: 'Verdana','sans-serif'">P(-IV) <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> || <span style="FONT-FAMILY: 'Verdana','sans-serif'">212 <span style="FONT-SIZE: 12pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif'"> ||
 * Compounds **

Fluorides<span style="FONT-SIZE: 14.5pt; FONT-FAMILY: 'Georgia','serif'">
<span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Phosphorus trifluoride] : PF3 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Phosphorus pentafluoride] : PF5 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Diphosphorus tetrafluoride] : P2F4

Chlorides<span style="FONT-SIZE: 14.5pt; FONT-FAMILY: 'Georgia','serif'">
<span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Phosphorus trichloride] : PCl3 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Phosphorus pentachloride] : PCl5 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Diphosphorus tetrachloride] : P2Cl4

Bromides<span style="FONT-SIZE: 14.5pt; FONT-FAMILY: 'Georgia','serif'">
<span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Phosphorus pentabromide] : PBr5 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Diphosphorus tetrabromide] : P2Br4

Iodides<span style="FONT-SIZE: 14.5pt; FONT-FAMILY: 'Georgia','serif'">
<span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Phosphorus triiodide] : PI3 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Diphosphorus tetraiodide] : P2I4

Oxides<span style="FONT-SIZE: 14.5pt; FONT-FAMILY: 'Georgia','serif'">
<span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Tetraphosphorus decaoxide] : P4O10 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Tetraphosphorus hexaoxide] : P4O6

Sulfides<span style="FONT-SIZE: 14.5pt; FONT-FAMILY: 'Georgia','serif'">
<span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Tetraphosphorus trisulphide] : P4S3 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Tetraphosphorus decasulphide] : P4S10 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Tetraphosphorus hexasulphide] : P4S6 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Tetraphosphorus nonasulphide] : P4S9 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Tetraphosphorus pentasulphide (alpha)] : P4S5 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Tetraphosphorus heptasulphide] : P4S7 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Tetraphosphorus tetrasulphide] : P4S4

Selenides<span style="FONT-SIZE: 14.5pt; FONT-FAMILY: 'Georgia','serif'">
<span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-bidi-font-size: 11.0pt"> ·  <span style="FONT-FAMILY: 'Verdana','sans-serif'"><span style="FONT-FAMILY: 'Calibri','sans-serif'">[|Tetraphosphorus triselenide] : P4Se3 <span style="FONT-FAMILY: 'Calibri','sans-serif'">Phosphorus is best known as a nutrient for its part in the creation of bones and teeth. It helps the body absorb and make use of calcium, and with the mineral magnesium, Vitamin D, and Vitamin C, it serves in the formation of the hard surfaces of bones and teeth. <span style="FONT-FAMILY: 'Calibri','sans-serif'">It has a role also in the working of the body's muscular system and is therefore important to the beating of the heart. It is specifically associated with the smooth and regular contraction of the body's muscles, as well as with the nerves and their ability to communicate. Phosphorus also is essential to the proper formation of cell membranes and the correct creation of genetic material. <span style="FONT-FAMILY: 'Calibri','sans-serif'">Phosphorus helps in the transformation of nutrients to energy, working with the vitamins that make up the powerful group known as the Vitamin B complex. In fact, thiamin, or Vitamin B1, cannot be used by the body without phosphorus, which means that this mineral also has a role in the digestive system, as well as the nervous system. It also serves in kidney function and helps regulate the body's pH levels. Iodine and zinc, which both play an important role in the development and function of the reproductive system, need phosphorus in order to be properly utilized by the body. **<span style="FONT-SIZE: 11.5pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">Who / Where / When / How ** <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ansi-language: EN">Discoverer: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN"> Hennig Brand <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ansi-language: EN">Discovery Location: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN"> Hamburg Germany <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ansi-language: EN">Discovery Year: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN"> 1669 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ansi-language: EN">Name Origin: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN"> <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">Greek: phôs (light) and phoros (bearer). <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ansi-language: EN">Abundance of Phosphorus: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN"> <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 'Courier New'; mso-ansi-language: EN"> o  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ansi-language: EN">Earth's Crust **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">/p.p.m.: 1000 <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 'Courier New'; mso-ansi-language: EN"> o  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ansi-language: EN">Seawater **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">/p.p.m.: <span style="FONT-SIZE: 10pt; FONT-FAMILY: Wingdings; mso-fareast-font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-ansi-language: EN"> §  <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">Atlantic Suface: 0.0015 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Wingdings; mso-fareast-font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-ansi-language: EN"> §  <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">Atlantic Deep: 0.042 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Wingdings; mso-fareast-font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-ansi-language: EN"> §  <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">Pacific Surface: 0.0015 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Wingdings; mso-fareast-font-family: Wingdings; mso-bidi-font-family: Wingdings; mso-ansi-language: EN"> §  <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">Pacific Deep: 0.084 <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 'Courier New'; mso-ansi-language: EN"> o  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ansi-language: EN">Atmosphere **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">/p.p.m.: N/A <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-fareast-font-family: 'Courier New'; mso-ansi-language: EN"> o  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ansi-language: EN">Sun **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN"> (Relative to H=1E <span style="FONT-SIZE: 7pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">12 <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">): 316000 <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ansi-language: EN">Sources of Phosphorus: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN"> <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">Found most often in phosphate rock. Annual world wide production is around 153,000,000 tons. Primary mining areas are Russia, USA, Morocco, Tunisia, Tongo and Nauru. <span style="FONT-SIZE: 10pt; FONT-FAMILY: Symbol; mso-fareast-font-family: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN"> ·  **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-bidi-font-size: 11.0pt; mso-ansi-language: EN">Uses of Phosphorus: **<span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN"> <span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Verdana','sans-serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN">Used in the production of fertilizers, fireworks, matches, pesticides, toothpaste and detergents. The Greek/Latin name of Phosphorus was not found. **__Video__** http://video.google.com/videosearch?hl=en&rls=com.microsoft:en-us&resnum=0&q=phosphorus&um=1&ie=UTF-8&sa=N&tab=wv# <span style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">    **__Pictures__**
 * Biological **

Phosporus is dangerous in exposed to oxygen.

http://environmentalchemistry.com/yogi/periodic/P.html#Chemical http://www.chemicool.com/elements/phosphorus.html http://www.webelements.com/phosphorus/ http://chetday.com/phosphorussupplement.htm