Which of the metals has the maximum thermal conductivity?

Options

A. Iron
B. Aluminium
C. Silver
D. Copper

Answer

C

Explanation

Silver has the best thermal conductivity of 429 W/mK at RT (295K). It is followed by copper, gold and aluminium. Metals generally have very good electrical conductivity, that leads to high thermal conductivity. There is a rule governing the relation between electrical conductivity and thermal conductivity, called Wiedemann Franz Law.