which of the following statements are true about metals ?

Options

A. Valence band overlaps with conduction band
B. the gap between valence band and conduction band is negligible
C. the gap[ between valence band and conduction band cannot be determinted
D. Valence band may ramain paratially filled

Answer

A,B,D

Explanation

Option (a) , (b) and ( c) are true option ( c) can be correctly stated as the gap between valence band can be determined , The gap between valence band and conduction band decide the conductivity of material .