Question

The conduction band and valency band of a good conductor are

• A. well separated.
• B. just touch.
• C. very close.
• D. overlapped.

Answer 1

The correct option is D overlapped.

In conductors, electrons are loosely bound to the nucleus hence, can detach easily at room temperature also. A large number of free electrons thus, available are conduction electrons. The energy level of these electrons corresponds to the conduction level, hence valance level and conduction level are overlapped.