Carbon , silicon and germanium have four valence elcectrons each . These are characterised by valence and conduction bands separated by energy band - gap respectively equal to (E_g)_(c) (E_g)_(si) and (E_g)_(Ge) . Which of the following statements ture ?
Answers
Answered by
0
The options given are as follow:
(Eg)Si<(Eg)Ge<(Eg)C
(Eg)C<(Eg)Ge)>(Eg)Si
(Eg)C>(Eg)Si>(Eg)Ge
(Eg)C=(Eg)Si=(Eg)Ge
Explanation:
Among these
Option C is correct
(Eg)C>(Eg)Si>(Eg)Ge
That's because
C → Insulator ( eg = 5.4 ev)
Si → S.c. ( eg = 1.1 e.v)
Ge → S.c. ( eg = 0.7 e.v)
So
Eg of C > Eg of Si > Eg of Ge
Similar questions