Metal are good conductors, because

A They contain free electrons
B The molecules in them are very close to each other
C The molecules in them collide very freely
D They contain reflecting surface

Correct Answer: They contain free electrons

Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions.
Bissoy MCQ
#General Knowledge #Chemistry

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