Q 1319434310.     `C, Si` and `Ge` atoms have `4` Valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by `E_C, E_{Si}, E_{Ge}` respectively. Which of the following relationship is true in their case?

A

`E_C gt E_{Si}`

B

`E_C lt E_{Ge}`

C

`E_C lt E_{Si}`

D

`E_C = E_{Si}`

HINT

Energy to take out an electron depends on its distance from nuclei.

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