Question

If the energy gap of a substance is 5.4 eV, then the substance is:

• A. Insulator
• B. Conductor
• C. p-type semiconductor
• D. n-type semiconductor

Hint:

Materials with an energy gap greater than about 3 eV are generally classified as insulators because their large band gap does not allow electrons to easily jump from the valence to the conduction band under normal conditions.

Answer 1

The Correct Option is A

The energy gap of a material determines its conductivity. A gap of 5.4 eV is characteristic of insulators, which have wide energy gaps preventing free electrons from easily jumping the gap to conduct electricity.