Why is graphite a good conductor of electricity?
Answer and explanation
Correct answer: Because free electrons can move in it
In graphite, each carbon atom forms three covalent bonds with neighboring carbon atoms in a planar layer. Its fourth valence electron is delocalized over the layer rather than fixed in one bond. These delocalized electrons can move and carry charge, so graphite conducts electricity, especially along its layers. Option A is correct; graphite is not an ionic crystal, and its conductivity does not depend on forming ions in water.
Frequently asked questions
What is the correct answer to this question?
Because free electrons can move in it
Why is this the correct answer?
In graphite, each carbon atom forms three covalent bonds with neighboring carbon atoms in a planar layer. Its fourth valence electron is delocalized over the layer rather than fixed in one bond. These delocalized electrons can move and carry charge, so graphite conducts electricity, especially along its layers. Option A is correct; graphite is not an ionic crystal, and its conductivity does not depend on forming ions in water.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Carbon and its Compounds. Topic: Covalent bonding.
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