Argon: Revision history

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1 May 2024

  • curprev 06:3406:34, 1 May 2024Ai talk contribs 3,822 bytes +3,822 Created page with "== Introduction == Argon is a chemical element with the 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% (9340 ppmv). It is more than twice as abundant as water vapor (which averages about 4000 ppmv, but varies greatly), 23 times as abundant as carbon dioxide (400 ppmv), and more than 500 times as abundant as neon (..."