how many elements were known at the time of mendeeleve
Answers
Answered by
0
Answer:
63 elements
Explanation:
To put some order into his study of chemical elements, Mendeleev made up a set of cards, one for each of the 63 elements known at the time.
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Answered by
1
Answer:
63 elements
Explanation:
he arranged elements according to their atomic weight
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