Q. Which one of the following is a good electrical conductor?
Answer: Graphite
Notes: Graphite is a good conductor of electricity because its electrons are delocalized or free to move around. Each carbon atom in graphite is directly linked to only three carbon atoms through covalent bonds. Therefore, out of the four valence electrons in a carbon atom, only three are used for bonding and the fourth is relatively free. It can move easily from one carbon atom to the other.

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📌 Question Number: 19 in Physics GK 20 - Electricity in the above course in App.