Why all metals are good conductors of heat
As answered previously...
In the process of thermal conduction heat travels through the body of the material (here a metal rod) by the collision or interaction between its molecules or atoms. The atoms (or molecules) are in a state of constant vibration and upon interaction with another atom exchange of energy takes place. In case of metals, as most metals are solids (except Mercury), the atoms (or molecules) are so tightly packed that the heat transfer is more efficient and is much greater that either liquids or solids
@All...Good answers, keep it going!