Question

Classify metals, semiconductors and insulators on the basis of energy bands class 12

Answer 1

Semiconductors

A finite but a small energy gap exists between the valence band and the conduction band

At room temperature, some of the electrons from the valence band acquire energy and move into the conduction band

Hence, at high temperature, semiconductors have conductivity and resistance is also not as high as insulators

Types of semiconductors

There are two types – Intrinsic semiconductor and Extrinsic semiconductor