Question

1. "The properties of the elements are periodic function of their
atomic numbers.” The statement was given by [MNR 1995)
(a) N. Bohr
(b) J.W. Dobereiner
(c) D.I. Mendeleev
(d) H.G.J. Moseley​

Answer 1

Answer:

c is right D.I Mendeleev

Explanation:

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Answer 2

Answer:

option (D)

Explanation:

Moseley's contribution to the science was the justification from physical laws of the previous empirical and chemical concept of atomic number. He justified many concepts in chemistry by sorting the chemical elements of periodic table of elements in a logical order.

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