A) p-type semiconductor
B) n-type semiconductor
C) (i) and (ii) both
D) None of the above
Correct Answer: B
Solution :
Pentavalent elements have one excess valence electron after forming the four covalent bond normally formed by germanium. The excess electrons give rise to electrical conductance. It is called n-type semi-conductors, the symbol 'n' indicates that the negative charge flows in them.
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