5
The number of known elements changed very rapidly over a
150-year period. There were 6...
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Chemistry, 14.04.2020 08:14 punkinrichard1oxon2i
5
The number of known elements changed very rapidly over a
150-year period. There were 62 known elements in the mid-1800s.
How many know elements (total) are there today?
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Answers: 2
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