p-Block elementsHard

Question

The energy gaps (Eg) between valence band and conduction band, for diamond, silicon and germanium are in the order.

Options

A.Eg (diamond) > Eg (silicon) > Eg (gemanium)
B.Eg (diamond) < Eg (silicon) < Eg (gemanium)
C.Eg (diamond) = Eg (silicon) = Eg (gemanium)
D.Eg (diamond) > Eg (gemanium) > Eg (silicon)

Solution

In diamond, it is highest (6eV), for silicon,it is 1.1 eV and for germanium, it is 0.72 eV.

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