A) 5 to 10eV
B) 2.1eV
C) 0.8eV
D) zero
Correct Answer: D
Solution :
Key Idea: In a conductor, electric current can flow freely. In case of conductors, the partially filled conduction band [C] and the valence band [V] overlap. Hence, width of forbidden band is zero. Electrons of valence band move freely in partially filled conduction band. So, in pure electric conductor, forbidden gap is zero.
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