Which one of the following bonds produces a solid that reflects light in the visible region and whose electrical conductivity decreases with temperature and has high melting point?

Options

(a) metallic bonding
(b) van der Waal’s bonding
(c) ionic bonding
(d) covalent bonding

Correct Answer:

metallic bonding

Explanation:

For a metal, conductivity decreases with increase in temperature. Also, metal has high melting point