In semiconductors at room temperature,

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Question

(D) At room temperature,thermal energy is sufficient to excite some electrons from the valence band to the conduction band in a semiconductor.However,

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the valence band is completely filled and the conduction band is partially filled

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(D) At room temperature,thermal energy is sufficient to excite some electrons from the valence band to the conduction band in a semiconductor.However,the number of electrons excited is very small compared to the total number of electrons in the valence band.Therefore,the valence band remains almost completely filled,and the conduction band contains only a small number of electrons,making it partially filled.Thus,the correct description is that the valence band is almost completely filled and the conduction band is partially filled.

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