1.

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 (E_(g))_(C),(E_(g))_(Si) and (E_(g))_(Ge). Which of the following statements is true?

Answer»

`(E_(g))_(Si) LT (E_(g))_(Ge) lt (E_(g))_(C)`
`(E_(g))_(C) lt (E_(g))_(Ge) GT (E_(g))_(Si)`
`(E_(g))_(C) gt (E_(g))_(Si) gt (E_(g))_(Ge)`
`(E_(g))_(C) = (E_(g))_(Si) = (E_(g))_(Ge)`

ANSWER :c


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