Question Detail
Question
The energy band in which free electrons exist is the:
Correct Answer
Option C is the correct answer.
Detailed Explanation
In materials, electrons occupy energy bands. The valence band contains electrons that are tightly bound to atoms. The conduction band is the energy band where electrons can move freely and contribute to electrical conduction. Free electrons are found in the conduction band.
Hint
Which band allows electrons to 'conduct' electricity?