Henderson,+Brent

Helium-He



[|Boiling point:] 4.22 K, -268.93 Melting Point:  .95 K Atomic- Number: 2 Atomic Weight: 4.002602 Protons: 2 Neutrons:  2 Electrons:  2 Orbital Notation: <span style="font-family: 'Arial Black','sans-serif'; font-size: 16px;">1s2

<span style="color: red; font-family: 'Arial Black','sans-serif'; font-size: 32px;">History <span style="font-family: 'Arial Black','sans-serif'; font-size: 16px;">Helium was Discovered Sir William Ramsay and independently by N.A Langley and P.T Cleve in London, England 1895. It was while he was observing a solar eclipse, that he noticed the yellowish glow radiating off of the eclipse. Origin of name: From the Greek word [|“helios”] which means “sun.

<span style="color: red; font-family: 'impact','sans-serif'; font-size: 96px;"> <span style="font-family: 'Impact','sans-serif'; font-size: 32px;">[|Common Uses:] <span style="color: #002060; font-family: 'Arial Black','sans-serif'; font-size: 16px;">Filling balloons, much safer alternative than hydrogen gas. <span style="color: #002060; font-family: 'Arial Black','sans-serif'; font-size: 16px;">-Widely used as an inert gas shield for arc welding. Helium is used as an alternative in countries where argon is more expensive than helium. <span style="color: #002060; font-family: 'Arial Black','sans-serif'; font-size: 16px;">- A mixture of 20 % oxygen and 80 % helium is used as an artificial atmosphere for those working under pressure, in jobs such as diving. <span style="color: #002060; font-family: 'Arial Black','sans-serif'; font-size: 16px;">-Used in Supersonic wind tunnels. <span style="color: #002060; font-family: 'Arial Black','sans-serif'; font-size: 16px;">-Pressurizing liquid fuel rockets. <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">
 * <span style="color: #002060; font-family: 'Arial Black','sans-serif'; font-size: 16px;">-Protective gas in growing germanium crystals and silicon **<span style="color: #002060; font-family: 'Arial Black','sans-serif'; font-size: 16px;">, and in the production of titanium and zirconium production.

<span style="color: red; font-family: 'Impact','sans-serif'; font-size: 29px;">Cost of helium: <span style="font-family: 'Arial Black','sans-serif'; font-size: 16px;">[|14 Cubic Ft of Helium] can cost anywhere from 30- 60 dollars.



<span style="color: red; font-family: 'Arial Black','sans-serif'; font-size: 24px;">Citation: <span style="font-family: 'Arial Black','sans-serif'; font-size: 16px;">U.S Department of The Interior Bureau of Land Management, [], Bureau of Land Management, 1/13/2011. <span style="color: red; font-family: 'Arial Black','sans-serif'; font-size: 24px;">Citation: <span style="font-family: 'Arial Black','sans-serif'; font-size: 16px;"> Web Elements, [], Mark Winters, 1993-2012. <span style="color: red; font-family: 'Arial Black','sans-serif'; font-size: 24px;">Citation <span style="font-family: 'Arial Black','sans-serif'; font-size: 16px;">: Helium, [], Chemicool, 10/17/2012