Question

Pentavalent impurities are called

• A. Acceptors
• B. Donors
• C. Receivers
• D. None of these

Answer 1

Answer: (B)

Donors

$\begin{array}{c}\text{Pentavalent impurities are used in doping}\\ \text{of semi-conductor.}\\ \text{it}\text{has}1\text{extra electron which can donate}\\ \text{to other part of semi-conductor.}\\ \text{so,}\text{it is known as donor impurity.}\end{array}$