helium

Helium


 * 1) Element Name: Helium
 * 2)  Element Symbol: He
 * 3) Atomic Number: 2
 * 4) Most Common Mass Number: 4
 * 5) Physical State at Room Temperature: Gas
 * 6) Meaning of the Element's Name or Latin/Greek Name: Helio/Sun
 * 7) Uses of the Element: Filling party ballons and hot air ballons to make them float.
 * 8) Biological Importance of the Element:
 * 9) Who Discovered the Element: The French astronomer Pierre Janssen
 * 10) How the Element was Discovered: Helium was discovered in the gaseous atmosphere surrounding the sun. Pierre Janssen detected a bright yellow line in the spectrum of the solar chromosphere during an eclipse in 1868
 * 11) Physical Properties of the Element: Colorless/gas/Boiling point 4.2K
 * 12) Chemical Properties of the Element: 2 protons/2 neutrons/atomic weight 4
 * 13) Common Compounds of the Element, if any: None
 * 14) Common Ions of the Element, if any: None
 * 15) <span style="FONT-FAMILY: 'Comic Sans MS', cursive">Isotopes of the Element, if any: Helium3/Helium4
 * 16) <span style="FONT-FAMILY: 'Comic Sans MS', cursive">At least 2 Pictures of the Element in Some Form: [[image:http://tbn0.google.com/images?q=tbn:7GXOv1bN6S6cOM:http://aspire.cosmic-ray.org/labs/star_life/images/helium.jpg width="99" height="88" link="http://images.google.com/imgres?imgurl=http://aspire.cosmic-ray.org/labs/star_life/images/helium.jpg&imgrefurl=http://aspire.cosmic-ray.org/labs/star_life/images/&h=300&w=300&sz=15&hl=en&start=1&um=1&usg=__MadD5B8VBaKcsSM43YyjmR2IG5I=&tbnid=7GXOv1bN6S6cOM:&tbnh=116&tbnw=116&prev=/images%3Fq%3Dhelium%26um%3D1%26hl%3Den%26rls%3Dcom.microsoft:en-us:IE-SearchBox%26rlz%3D1I7SNYI%26sa%3DN"]][[image:http://tbn0.google.com/images?q=tbn:w5j5Wqxwik4d_M:http://www.geekologie.com/2007/11/13/helium-lights.jpg width="95" height="108" link="http://images.google.com/imgres?imgurl=http://www.geekologie.com/2007/11/13/helium-lights.jpg&imgrefurl=http://www.geekologie.com/2007/11/&h=533&w=450&sz=20&hl=en&start=6&um=1&usg=__O9OpKkcuojm5Iz4deicTnujSxgQ=&tbnid=w5j5Wqxwik4d_M:&tbnh=132&tbnw=111&prev=/images%3Fq%3Dhelium%26um%3D1%26hl%3Den%26rls%3Dcom.microsoft:en-us:IE-SearchBox%26rlz%3D1I7SNYI%26sa%3DN"]]
 * 17) At least 1 link to another element's page.:hydrogen
 * 18) [|Helium sources]