Difference between Valence band and Conduction band
Valence band
The electrons in the outermost orbit of an atom are known as valence electrons .The band that contains the valence electrons, called valence band. This band may be completely or partially filled . The electrons in the valence band do not conduct the electricity.
Conduction band
The band in which the electrons conducts the electricity, known as conduction band. The conduction band is a delocalized band of energy levels in a crystalline solid which is partly filled with electrons. All electrons in conduction band are free electrons.
Difference between Valence band and Conduction band
| Valence Band | Conduction Band |
| Valence band is denoted with the VB. | Conduction Band is denoted with CB. |
| Location of Valence band is below the Fermi level. | Location of Conduction band is over the Fermi level. |
| Due to the existence of electrons valance band is partially or completely filled. | Conduction band not filled or partially filled. |
| Concentration of electrons in this band is high. | Concentration of electrons in this band is less. |
| Electrons do not conduct electricity. | All electrons in conduction band are free electrons. |
| Energy state is less. | energy state is larger than the valance band. |
| Exerted force on this band due to the nucleus is stronger. | Exerted force on this band due to the nucleus is less as compared to valence band. |