Question

A. The energy band of valence electrons is called Valence band B. The energy band of free electrons or loosely bound electrons is called conduction band.

Answer 1

Explanation:

Electrons in the valence band have lower energy than the electrons in conduction band. The electrons present in the valence band are loosely bound to the nucleus of atom. The energy band which is formed by grouping the range of energy levels of the free electrons is called as conduction band.