Formation Of Energy Band In Solids:
When a large number of atoms are brought together to form a crystal, interactions occur the proper inter-atomic spacing for the crystal. The discrete energy levels of electrons of an atom are modified by the presence of other nearby atoms. As the spacing between atoms is decreased, the energy level of each electron is increasingly influenced by the charge distribution of neighboring atoms. The magnitude of influence depend on the spacing between atoms as also the location of the electron in the group. Levels of outer shell electrons are changed consideration of the electrons are shared by more than one atom in the crystal. New energy levels of outer shell electrons can be determined by the principles of quantum mechanics. Pauli's exclusion principle dictates that no two electrons in a given interacting system may have the same quantum state. Thus there must be a splitting of the discrete energy levels of the discrete energy level of the isolated atoms into new levels belonging to the pair rather than individual atoms.
When a large number of atoms are brought together to form a crystal, interactions occur the proper inter-atomic spacing for the crystal. The discrete energy levels of electrons of an atom are modified by the presence of other nearby atoms. As the spacing between atoms is decreased, the energy level of each electron is increasingly influenced by the charge distribution of neighboring atoms. The magnitude of influence depend on the spacing between atoms as also the location of the electron in the group. Levels of outer shell electrons are changed consideration of the electrons are shared by more than one atom in the crystal. New energy levels of outer shell electrons can be determined by the principles of quantum mechanics. Pauli's exclusion principle dictates that no two electrons in a given interacting system may have the same quantum state. Thus there must be a splitting of the discrete energy levels of the discrete energy level of the isolated atoms into new levels belonging to the pair rather than individual atoms.
0 on: "Formation Of Energy Band In Solids"