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jan 1, 1809 - 47 elements were discovered
Description:
In 1809, at least 47 elements were discovered by scientists. They began to see patten in the elements.
Added to timeline:
The Historical Development of the Period Table
By
Joshua Martin
20 Jan 2020
0
0
345
Date:
jan 1, 1809
Now
~ 217 years ago
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