Why metal is a good THERMAL conductor but plastic is a worse conductor than metal? Is it also due to the delocalised electrons of the metal?plz explain it.

2 answers

ya!its due to the delocalised electrons,plz bear in mind that,do not write free electrons during exams,or marks will be deducted!u must write DELOCALIZED ELECTRONS.
giant metallic structure---delocalized electrons

giant ionic structure-----mobile ions

giant covalent-----delocalized

simple molecular struct.----absence of mobile ions