why are metals good and non metals bad conductors of electricity?

Asked by ayushikas | 11th Oct, 2010, 06:02: PM

Expert Answer:

Dear Student
Conducting take place due to the movement of the electrons. Most metals are good conductors of electricity because, When metal atoms combine with each other, the outermost electrons lose contact with their parent atoms. The remaining positively charged atomic centers form an ordered structure while the outer electrons move freely around the whole sample.
These freely moving electrons, called conduction electrons, can carry heat energy and electric charge easily throughout the metal, making metals good conductors of heat and electricity.
But in case of the non metals, the electrons are held tightly by the nucleus, thus they cannot move easily. So they are not good conductors. But they also became conductors when a high energy is applied which makes the electrons movement feasible.
We hope that clarifies your query.

Answered by  | 11th Oct, 2010, 08:17: PM

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