Q.

According to periodic law of elements, the variation in properties of elements is related to their

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a

Atomic number

b

Neutron-proton ratio

c

Atomic mass

d

Nuclear mass

answer is A.

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Detailed Solution

This is Mosley's periodic law.

Moseley gave the Modern Periodic Law which states that “Physical and chemical properties of the elements are the periodic function of their atomic numbers”.

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