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Argon

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Argon - Periodic Table of Videos

2:02

Argon - Everything you need to know about this element

6:32

Argon - THE HOTTEST GAS ON EARTH!

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Argon - Chemical Element

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Chemical Element Series: Argon

Argon is a chemical element with symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. Argon is the third-most abundant gas in the Earth's atmosphere, at 0.934%. It is more than twice as abundant as water vapor, 23 times as abundant as carbon dioxide, and more than 500 times as abundant as neon. Argon is the most abundant noble gas in Earth's crust, comprising 0.00015% of the crust.
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