A metal 's ability to conduct electricity

Options

A. increases with increase of temperature
B. decreases with increase of temperature
C. decreases with increase of temperature
D. does not charge with temperature

Answer

2

Explanation

The conductivity of metals strongly depends on the number of valence electrons available per atom .The atomic orbitals of metal atoms form molecular orbitals which are so close in energy to each other that they from a band.
In metals this band is either partially filled or it overlaps with a higher energy unoccupied conduction band. As a result electrons can flow easily under an applied electric field and the metal shows conductivity.
The vibration of metals atoms distrups the flow of electrons Therefore, the electric conductivity of metal decreases with increasing temperature beacause at higher temperatures the metal cations undergo increased vibrational motion about their lattice sites.