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Question
Chemistry
The number of elements known at that time when Mendeleev arranged them in the periodic table was
Q. The number of elements known at that time when Mendeleev arranged them in the periodic table was
1101
192
Classification of Elements and Periodicity in Properties
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A
63
64%
B
60
11%
C
71
16%
D
65
10%
Solution:
Only
63
elements were known at that time when Mendeleev arranged them in the periodic table.