Q.

Which of the following is not a donor atom?

A. Phosphorus
B. Antimony
C. Arsenic
D. Aluminium
Answer» D. Aluminium
Explanation: Aluminium is an acceptor atom, an impurity atom in a semiconductor, which can accept or take up one or more electrons from the crystal and become negatively charged. In semiconductor physics. It is a dopant atom that when added to a semiconductor can form a p- type region.
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