Question

Select the sentence that best describes why copper and some other metals are good conductors.

Answer 1

B) Copper atoms have a loosely held free electron in their outer shell that is able to move freely to other atoms.

Answer 2

Answer:

B) Copper atoms have loosely held free electrons in their outer shell that is able to move freely in other atoms.

Explanation:

A material which has loosely held free electrons in its outermost shell is always a good conductor. These loosely held free electrons move from atoms to atoms and cause conductivity. It is known that copper and other metals are good conductors. Therefore, option (B) supports the argument and is a right answer.