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

  1. A
    The four bonding electrons in lie in the third orbit, whereas for they lie in the fourth
  2. B
    In the valence band is not completely filled at absolute zero
  3. C
    In the conduction band is partly filled even at absolute zero
  4. D
    The four bonding electrons in lie in the second orbit, whereas in they lie in the third

Solution & Step-by-step Explanation

() has valence electrons in , while () has them in . Because the valence electrons in Carbon are closer to the nucleus and more tightly bound, the energy gap () between the valence and conduction bands is much larger (approx ) compared to Silicon (approx ). A large band gap makes Carbon an insulator.

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and both have same lattice structure, having bonding electrons in each. However, is insulator whereas is intrinsic semiconductor. This is because:
A
The four bonding electrons in lie in the third orbit, whereas for they lie in the fourth
B
In the valence band is not completely filled at absolute zero
C
In the conduction band is partly filled even at absolute zero
D
The four bonding electrons in lie in the second orbit, whereas in they lie in the third

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ElectronicsSemiconductorsBand Theory

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