Physics-
General
Easy
Question
Carbon, silicon and germanium have four valence electrons each. At room temperature which one of the following statements is most appropriate?
- the number of free conduction electrons is significant in C but small in Si and Ge
- the number of free conduction electrons is negligibly small in all the three.
- the number of free electrons for conduction is significant in all the three.
- the number of free electrons for conduction is significant only in Si and Ge but small in C.
The correct answer is: the number of free electrons for conduction is significant only in Si and Ge but small in C.
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