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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
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jan 1, 1895 - Lord Rayleigh discovered argon, a new gaseous element that was chemically inert.

Added to timeline:

7 Feb 2020
1
0
169
History of the Atom

Date:

jan 1, 1895
Now
~ 129 years ago
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