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dec 30, 1893 - William Ramsay discoverded the noble gases.
Description:
He then added them onto the periodic table.
https://www.sciencelearn.org.nz/resources/1804-development-of-the-periodic-table
Added to timeline:
Chemistry Project
By
Aaron
1 Oct 2018
0
0
350
Date:
dec 30, 1893
Now
~ 131 years ago
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