How does band theory explain that a solid is a conductor, a semiconductor, or an insulator of electric current? Match the following columns: 1. Driver a. Valencia band totally full very separate from driving 2. Semiconductor b. Fully filled Valencia band superimposed to the driving 3. Insulator c. Band of valencia totally full little separate from driving.
How does band theory explain that a solid is a conductor, a semiconductor, or an insulator of
1. Driver a. Valencia band totally full very separate from driving
2. Semiconductor b. Fully filled Valencia band superimposed to the driving
3. Insulator c. Band of valencia totally full little separate from driving.
Introduction:
The Band theory is an important concept used for the classification of solids into conductor(given as driver in the question), semiconductor and insulator. According to Band theory, energy levels in a crystal(solid) can be divided into three bands namely "Inner band", "Conduction band" and "Valence band". The electrons in the outer orbit which determines the valency of the atom remains in the valence band. The electrons that are capable of conducting electricity remain in the conduction band. The gap between the conduction band and the valence band determines the type of crystal(solid).
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