A silicon material is dopped with an element of a certain group and an n-type semi-conductor is formed. The most likely group of the element is?

A. V
B. III
C. I
D. II

Correct Answer:

Option A – V

Explanation

Silicon is a tetravalent (4 valent) element, and in order to produce an n-type semi-conductor, it has to be dropped with a pentavalent (5valent)element, that, that is element in group five (v)