Question

Electronic configuration of germanium is 2, 8, 18 and 4. To make it extrinsic semiconductor small quantity of antimony is added. The correct statement is ____________.

Options

• The material obtained will be n-type germanium in which electrons and holes are equal in number

• The material obtained will be p-type germanium

• The material obtained will be n-type germanium which has more electrons than holes at room temperature

• The material obtained will be n-type germanium which bas less electrons than holes at room temperature

Answer 1

Electronic configuration of germanium is 2, 8, 18 and 4. To make it extrinsic semiconductor small quantity of antimony is added. The correct statement is The material obtained will be n-type germanium which has more electrons than holes at room temperature.

Explanation:

Antimony is an electron donor because it is a fifth group impurity.