Metals are good conductors of electricity than non-metals because:

Metals have free electrons which can move from atom to atom easily

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Non-metals have free electrons which can move from atom to atom easily

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Metals have bound electrons which cannot move easily

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Non-metals have bound electrons which cannot move easily

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Solution

The correct options are
B Metals have free electrons which can move from atom to atom easily
C Non-metals have bound electrons which cannot move easily
Metals have free electrons which can move from atom to atom easily, whereas non-metals do not, their electrons are 'bound' meaning they cannot move easily. That's why metal are usually good conductors than non-metals.

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