Question

Which of the following statement is true for graphite?

(a) In graphite, each carbon atom is bonded to four other carbon atoms.
(b) Graphite is very hard.
(c) It is a good conductor of electricity.
(d) It is a bad conductor of electricity.

• A. a, b and d
• B. only c
• C. a and d
• D. a and c

Answer 1

Answer: (B)

only c

(a) In graphite, each carbon atom is bonded to three other carbon atoms.
(b) Graphite is soft and slippery.
(c) In, graphite only three out of four outer shell electrons form a covalent bond, thus leaving one free electron. These delocalized electrons can move freely and conduct electricity. Thus graphite is a good conductor of electricity. Thus out of the given statement only, statement C is correct.

Hence option B is the correct answer.