Question

(b) Why is atomic number more important than atomic weight in predicting the chemical properties of elements?​

Answer 1

Explanation:

Atomic number is Number of electrons in an atom. Now, Most of the chemical properties depend upon its valency electrons and Electronic configuration.So, atomic number is more important to a chemist, than its relative atomic mass.

Answer 2

Explanation:

Atomic number is important than atomic weight because most of the chemical properties of elements depend upon atomic number not in atomic weight.