Question on: JAMB Physics - 2005
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
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Correct Option: A
Silicon is a tetra valent (4 valent) element, and in order to produce an n type semi-conductor, it has to be dropped with a penta valent (5valent)element, that, that is element in group five (v)
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