Question

The high electrical and thermal conductivity of metal is primarily due to

A. High ionization energy

B. High electro negativity

C. Mobile electrons

D. Filled energy level

Answer 1

Options A, B and D can be excluded because metals are not characterized by high ionization energy, high electronegativity and filled energy levels; they rather tend to have opposite properties. High conductivity of metals is caused by electrons that are free to move through the lattice.

Answer: C) - mobile electrons.