Question

Q. Which of the following statements is/are incorrect about Graphenes?

Select the correct code from the options given below:

• A. 1 and 2 only
• B. 3 only
• C. 1 and 3 only
• D. 1, 2 and 3

Answer 1

The correct option is A 1 and 2 only

Explanation:

• Statement 1 is incorrect. In graphene, carbon atoms are arranged in a two-dimensional structure forming a hexagonal lattice.
• Statement 2 is incorrect. In graphene, each carbon atom is connected to three carbon atoms by 3 sigma bonds only, thus leaving a free electron. This is the reason for the very high thermal and electrical conductivity of graphene.
• Statement 3 is correct. It is very expensive to produce defect-free graphene on an industrial scale.