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Conductor and Insulators

The good cond...

Question

The good conductivity of metals, as compared to non-metals is due to the fact that:

A

Concentration of free electrons is higher in metals

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B

Electrons vibrate more vigorously in non-metals

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C

Atoms of non-metals posses higher kinetic energy

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D

Atoms are closely packed in metals

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Solution

The correct option is A
Concentration of free electrons is higher in metals

The larger concentration of free electrons in metals as compared to non-metals makes them good conductors of heat. These free electrons, when heated begin to vibrate vigorously and collide with one another, thus transferring the heat energy.

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