Question

Electronic configuration of Germanium is $2, 8, 18$ and $4$ . To make it extrinsic semi-conductor small quantity of antimony is added

• A. The material obtained will be n-type Germanium in which electrons and holes are equal in number
• B. The material obtained will be p-type Germanium
• C. The material obtained will be n-type Germanium which has more electrons than holes at room temperature
• D. The material obtained will be n-type Germanium which has less electrons than holes at room temperature.

Answer 1

Answer: (C)

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

Answer 2

Antimony is a fifth group impurity and is therefore a donor of electrons. When it is added to germanium, the material obtained will be $N$?