Question

Explain the reason for chemical activity of an atom with reference to its electronic configuration.

Answer 1

This is because the atom can't exist independently.Hence this helps us to know the electronic configuration of an atom we'll know the valence electrons.
The chemical properties of an atom depends on the number of electrons present in the valence shell of that atom.This valence electron have the ability to participate in chemical reactions.To attain the stability of the atom participate in chemical reactions by gaining electron,by loosing electrons or by sharing the electrons.