What is an energy band?

Question

Accepted Answer

An energy band is a range of allowed energy levels for electrons in a solid material.

Energy bands are formed due to the arrangement of atoms in a solid material.
There are two types of energy bands: valence band and conduction band.
Valence band is the band of energy levels occupied by electrons in their ground state.
Conduction band is the band of energy levels above the valence band that electrons can move into.
The energy gap between the valence band and conduction band determines the material's conductivity.
In insulators, the energy gap is large, while in conductors, the energy gap is small or nonexistent.
Semiconductors have a moderate energy gap, allowing for some conductivity.
Energy bands play a crucial role in determining the electrical and optical properties of materials.

Accepted Answer

The range of energies possessed by electrons of the same orbit is called energy band.

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