Question
Question: A small impurity is added to germanium to get a p-type semi-conductor. This impurity is a –...
A small impurity is added to germanium to get a p-type semi-conductor. This impurity is a –
A
Trivalent substance
B
Pentavalent substance
C
Bivalent substance
D
Monovalent substance
Answer
Trivalent substance
Explanation
Solution
Trivalent substance has 3 valence electrons