Question

2.
According to the Periodic Law of elements, the variation in
properties of elements is related to their
[2003]
(a) nuclear masses
(b) atomic numbers
(c) nuclear neutron-proton number ratios
(d) atomic masses​

Answer 1

Answer:

b is the answer....

hope it will help you

Answer 2

Answer:

Atomic numbers

• hope it is correct......