bromine

Element Symbol:** Br
 * Bromine
 * Atomic Number:** 35
 * Most Common Mass Number:** 80 ( 35 protons and 45 neutrons )
 * Physical State In Room Temp:** Volitile Liquid
 * Meaning Of Element:** Comes from the greek word bromos which means bad smell or stench
 * Uses Of Element:** Bromine is used for a variety of different things. Much bromine output is used in the production of 1,2-dibromoethane (ethylene dibromide), a lead scavenger used in making petrol antiknock compounds. It is also used for fumigants, flameproofing agents, water purification compounds, dyes, medicines, inorganic bromides used for photography, pesticides, and it can be used to make plastics flame retardent.
 * Biological Importance Of Element:** Bromine may be an essential trace element for red algae and possibly mammals. It is found in the mollusc pigment "royal purple", although its role is not understood. Excessive bromide intake leads to depression and of weight loss. When spilled on the skin it produces painful sores.
 * Who Discovered The Element And How:** Bromine was discovered by A J Balard in 1826AD, by the action of Chlorine on the residues (i.e. Bromide salts) after the crystallisation of the salt from the salt-marshes of Montpellier. Balard also demonstrated that the liquid was an element and he suggested the name Bromine (Greek, stench) for the liquid.
 * Physical properties Of Element:** Bromine is a volatile dense mobile reddish-brown liquid, which readily gives a brown toxic vapor with a disagreeable irritating odour.
 * Chemical Properties Of Elements:** Bromine is a very reactive element. While it is less reactive than fluorine or chlorine, it is more reactive than iodine. It reacts with many metals, sometimes very vigorously. For instance, with potassium, it reacts explosively. Bromine even combines with relatively un-reactive metals, such as platinum and palladium.
 * Common Compounds Of Element:** Halides, oxides, sulfides, hydrides, and complexes; lattice energies; and reduction potentials.
 * Common Ions:** A bromide ion is a bromine atom with a charge of -1.
 * Common Isotopes:**
 * ||~ Isotope 1 ||~ Isotope 2 ||~ Isotope 3 ||
 * [|**Isotope**] || **79Br** || **81Br** ||  ||
 * [|**Natural abundance**]**/%** || **50.69** || **49.31** ||  ||
 * [|**Spin**] **(I)** || **3/2** || **3/2** ||  ||
 * [|**Frequency**] **relative to 1H = 100 (MHz)** || **25.054452** || **27.007026** ||  ||
 * [|**Receptivity**]**, DP, relative to 1H = 1.00** || **0.0403** || **0.0491** ||  ||
 * [|**Receptivity**]**, DC, relative to 13C = 1.00** || **230** || **280** ||  ||
 * [|**Magnetogyric ratio**]**, γ (107 rad T-1 s-1)** || **6.725616** || **7.249776** ||  ||
 * [|**Magnetic moment**]**, μ (μN)** || **2.719351** || **2.931283** ||  ||
 * [|**Nuclear quadrupole moment**]**, Q (barn)** || **0.331** || **0.276** ||  ||
 * [|**Line width factor**]**, 1056l (m4)** || **0.15** || **0.10** ||
 * Link:** Bromine reacts very explosively with potassium.
 * Pictures:**

http://video.google.com/videosearch?q=bromine&hl=en&emb=0&aq=f# (more videos to the left)
 * Videos:**
 * More Info:**
 * Melting Point: -7.2 degrees C
 * Boiling Point: 58.8 degrees C
 * Bromine is the only liquid non metallic element
 * It is a member of the halogen group
 * It is mainly obtained from sea water
 * Some bromine is obtained by treating brines from wells in Michigan and Arkansas with chlorine


 * Sources: http://education.jlab.org/qa/pen_number.html, [|http://www.webelements.com/bromine/biology.html**], http://www.ucc.ie/academic/chem/dolchem/html/elem/elem035.html, http://www.bookrags.com/research/bromine/