Chapter 12, Problem 12.82SP

Interpretation Introduction

Interpretation:

The $n\text{-type}$ conductor and its examples should be given. MO diagram of $n\text{-type}$ should be drawn.

Concept introduction:

According to band theory, solids are classified as conductors, semiconductors, and insulators.

As per band theory, bands are a continuum of energy levels. The bands are of two types: valence band and conduction band.

The band that holds valence electrons is valence band and band that is slightly higher in energy than valence band is conduction band. On the basis of band theory, partly filled bands show conduction and are called conductors, and fully filled band doesn’t show conduction and are insulators.