ABOUT CARBON NOT SHOWING SEMICUNDUCTANCE PROPERTY.
--- carbon can conduct electricity, but carbon does not have resistivity and much of electrical energy will be lost as heat energy when it passes through carbon and it forms diamond crystal structures so when we add impurity atom it will not make any significant change. . . . .
---à carbon is not used as semiconductor it has 4 valence electron in its valence shell but the energy gap is very small it will conduct electricity even at room temperature , the size of carbon is very small. Whether in case of germanium and silicon it has d orbital which shows mobility.
---àor its allotropic form like graphite and carbon doesn’t allow the addition of electron , because carbon is already stable hence its stability doesn’t allow conductivity.
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