Answer:
Metal - smallest band gap energy
insulators - large band gap energies
semiconductor - Band gap of intermediate energies
superconductor cooper pair theory is applied for calculating gap energies.
Explanation:
Metal - smallest band gap energy
it is due to the fact that valence and conduction bond in metal are in overlapped conditioned. Therefore showing zero gap energies
insulators - large band gap energies
insulator has high band gap
semiconductor - Band gap of intermediate energies
semi conductor has gap of intermediate range
while for superconductor cooper pair theory is applied for calculating gap energies.
