At absolute zero, Si acts as (a) non-metal (b) metal (c) insulator (d) none of these

Answer: (c). At absolute zero no electron in Si can cross the band gap. Conduction band empty, valence band full: no free charge carriers. So the answer is (c) insulator.

At absolute zero, Si acts as | JEE Main 2002 (AIEEE)

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Intrinsic & Extrinsic Semiconductors

At absolute zero, Si acts as

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Answer: (c)

At absolute zero no electron in Si can cross the band gap.
Conduction band empty, valence band full: no free charge carriers.
So the answer is (c) insulator.

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