Question

Merits of mendeleev periodic classification

Answer 1

In Mendeleev's periodic table, elements were arranged on the basis of the fundamental property, atomic mass, and chemical properties. During Mendeleev'swork, only 63 elements were known.He arranged the elements such that elements with similar properties fell into same vertical columns of the periodic table.

Answer 2

Merits...=Some gaps were left for the elements yet to be discovered. Thus, if a certain new element is discovered, it can be placed in a new group without disturbing any existing group...

I hope my answer is wright..