Metals are good conductor of electricity because they contain

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false
D. If both assertion and reason are false

Answer

B

Explanation

metals have partially filled valence bands or overlapping valence and conduction band, hence electrons can flow easily under an applied electric field