Question

in Mendeleev's periodic table how many elements are present ​

Answer 1

Answer:

63 elements

In 1869, after the rejection of Newlands Octave Law, Mendeleev Periodic table came into the picture. In Mendeleev's periodic table, elements were arranged on the basis of the fundamental property, atomic mass, and chemical properties. During Mendeleev's work, only 63 elements were known.

Explanation:

Answer 2

may be 63 elements i don't know the exact