Question

total no. of elements at the mendeleev periodic table

Answer 1

There were 63 elemets in the mendellev periodic Table....
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Answer 2

The concept of a systematic measure for atomic weights greatly contributed to the success of Mendeleev's periodic table. In 1864, with about 50 elements known, the British chemist John Newlands noticed a pattern when he arranged the elements in order of atomic mass, or weight.

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