Question

Carbon, Silicon and Germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by (Eg)c (Eg)Siand (Eg)Ge respectively. Which one of the following relationships is true in their case .

Answer 1

silicone n carbon because both are responsible for forming large n.o of compounds in the nature .

Answer 2

✞QUESTION ✞

Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to (Eg)C, (Eg)Si and (Eg)Ge. Which of the following statements is true?

A. (Eg)Si< (Eg)Ge< (Eg)C

B. (Eg)C< (Eg)Ge> (Eg)Si

C. (Eg)C> (Eg)Si> (Eg)Ge

D. (Eg)C = (Eg)Si = (Eg)Ge

Answer:

C✅✅

____-:Explanation:-___

For an insulator, the band gap energy is always higher, (Eg≈ 6ev). And in case of silicon and germanium, silicon has higher energy gap than germanium. (This is experimental data.)