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![]() AR-GON
It's funny how it took scientists until 1894 to discover the most common noble gas on Earth. That's right, argon (Ar) makes up a little over one percent of our atmosphere. Lord Rayleigh and Sir William Ramsay discovered and isolated argon gas, but we joke about how long it took. They could never have done it earlier, because the technology wasn't available. In the same way that today's scientists are on the cutting edge of discovering elements with the atomic numbers over 120, they were on the cutting edge a century ago. Because it is inert, you will find argon in light bulbs, welding, and vacuum tubes (although you probably don't know what those are). Once isolated, argon was not that special. It has no smell and no color. It wound up as the last element in period three at position number eighteen. As usual, the last element in the row is a noble gas. Argon is in the same family as helium (He) and neon (Ne). For a long time, scientists thought that argon did not combine with any other elements. They were wrong. See? Even scientists don't always get the right answer! Where else can you find argon?
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![]() ©copyright 1997-2012 Andrew Rader Studios, All rights reserved. Current Page: Chem4Kids.com | Elements | Argon |
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