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C and Si both have same lattice structur...

`C` and `Si` both have same lattice structure, having `4` bonding electrons in each. However, `C` is insulator whereas `Si` is intrinsic semiconductor. This is because

A

in case of C the valence band is not completely filled at absolute zero temperature.

B

in case of C the conduction band is partly filled even at absolute zero temperature.

C

the four bonding electrons in the case of C lie in the second orbit whereas in the case of Si, they lie in the third.

D

the four bonding electrons in the case of C lie in the orbit whereas for Si, they lie in the fourth orbit.

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The correct Answer is:
C
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