Explain why Copper is more conductive of heat than iron?

Question

Something along the lines of atoms and properties of metal

Answer 1

Copper has a face-centered cubic (FCC) atomic structure, while iron has a body-centered cubic (BCC) structure (at RT). FCC has a higher atomic packing factor (APF). This creates an easier path for the electricity to flow through the crystal structure.

Answer 2

basically in Cu there are 9 electrons in its d shell which is its outer most shell but iron have 5 electron in d shell so Cu have more electron which can be easily free from Cu atom as compaired to the iron and heat flow with the help of electrons so Cu is more heat conductor than iron

Answer 3

first answer is right.