Which of the following is correct?

Options

A. The conductivity of metals increases with increasing temperature, whereas that of nonmetals decreases.
B. The conductivity of metals decreases with increasing temperature, whereas that of nonmetals increases.
C. The conductivity of both metals and nonmetals increases with the increases of temperature.
D. The conductivity of both metals and nonmetals decreases with the increases of temperature.

Answer

B

Explanation

With the increase of temperature, mobile electrons of metals colide more frequently with matal ions.