What makes metals a good conductor of heat and electricity?

Question

Quizplus · Accepted Answer

Metals have a unique feature that allows their valence electrons to be mobile, meaning they are free to move from one atom to another in a metal structure. This allows them to carry electrical charge easily, making metals good conductors of electricity. The same free movement of electrons also allows for good thermal conductivity, as heat energy can be passed on from atom to atom quickly through the rapid movement of electrons.

What Makes Metals a Good Conductor of Heat and Electricity