Question

According to the Periodic Law of elements, the
variation in properties of elements is related to their
(a) nuclear masses
(b) atomic numbers
(c) nuclear neutron-proton number ratios
(d) atomic masses

Answer 1

According to Mandeelev law option d is correct

and According to modern law option b is correct

hope you like it

Answer 2

Hey mate your answer is

d.Atomic masses

Hope it's help

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