Question

The reactivity of an atom arises from
A) the existence of unpaired electrons in the valence shell
B) the energy differences between the electron shells
C) the sum of the potential energies of all the electron shells
D) the average distance of the outermost electron shell from the nucleus

Answer 1

Answer =>>> option A

the existence of unpaired electrons in the valence shell

Answer 2

CORRECT OPTION ⏭️

,➡️A) the existence of unpaired electrons in the valence shell