Question

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

• A. Metals have free electrons which can move from atom to atom easily
• B. Non-metals have free electrons which can move from atom to atom easily
• C. Metals have bound electrons which cannot move easily
• D. Non-metals have bound electrons which cannot move easily

Answer 1

Answer: (A), (D)

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