helium

HELIUM

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Sir William Ramsay

Won a noble prize in chemistry and got Davy and long staff metals

*should be located in period 1 group 18

* in group 18 because its a noble gas and doesnt react with other chemicals and period 1 because its less reactive so its at the top and because of its atomic structure and as you go down the periods their protons and neutrons increase

http://www.knowledgedoor.com/2/elements_handbook/helium.html

William ramsay

* Born in glasgow on october 2 1852

*

Scottish chemist who discovered noble gases

*1895 invented clevite and mixed with other gases

to make helium and sent examples of gas to scientists

Lockyer and sir William Crooker

http://en.wikipedia.org/wiki/William_Ramsay

Helium atom

*a helium atom has two protons and neutrons in the nucleus

Has two valence electrons

*

http://chemistry.about.com/od/elementfacts/ig/Atom-Diagrams/Helium-Atom.-dr4.htm

http://education.jlab.org/itselemental/ele002.html

*used for inflatings blimps, scientific baloons, and party balloons

*Discovered on the sun before earth

*colorless, odorless, tasteless gas

*Inert gas and doesn't easily mix with other elements

*Made up of about 0.0005% of earths atmosphere

*Second most abundant element

*melting point- -458 degrees F

Boiling boint- _552.07 degrees F

Phase at room temp.- gas

Element: nonmetal, noble gas

*Lighter then air

http://education.jlab.org/itselemental/ele002.html

*

http://www.balloonheliumtank.com/disposable-helium-tank-3/

http://www.partylaneinc.com/id71.html

http://education.jlab.org/itselemental/ele002.html

http://www.nndb.com/people/490/000099193/