`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 becauseA. 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 ile 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 third orbit, whereas for Si they lie in the fourth orbit.

`C` and `Si` both have same lattice structure, having `4` bonding elec

1.	`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 becauseA. 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 ile 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 third orbit, whereas for Si they lie in the fourth orbit.
Answer» Correct Answer - C `.^(6)C=1S^(2),2S^(2)2P^(2)` `.^(14)Si=1S^(2),2S^(2)2P^(6),3S^(2)3P^(2)` As they are away from nucleus, so effect of nucleus is less

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