Question

# Carbon, silicon and germanium have four valence electrons each. At room temperature which one ofthe following statements is most appropriate ?

A
The number of free conduction electrons is significant in C but small in Si and Ge
B
The number of free conduction electrons is negligibly small in all the three
C
The number of free electrons for conduction is significant in all the three
D
The number of free electrons for conduction is significant only in Si and Ge but small in C
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