Rank the band gap energies of the following solids. metal insulator semiconductor superconductor i. large band gap energy ii. smallest band gap (or zero gap) energy iii. band gap energy of intermediate value

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.