The correct answer is option 2: "Diamond is a good conductor of electricity."

This statement is not correct because diamond is actually a poor conductor of electricity. Diamond is a form of carbon that is arranged in a crystal lattice structure, where each carbon atom is bonded to four other carbon atoms in a tetrahedral arrangement. This structure makes diamond extremely hard and has high thermal conductivity, but it does not allow for the free movement of electrons required for electrical conductivity.

Option 1 is correct: Buckminsterfullerene is an allotrope of carbon. Buckminsterfullerene, also known as C60 or fullerene, is a molecule composed of 60 carbon atoms arranged in a soccer ball-like structure.

Option 3 is correct: Graphite is a good conductor of electricity. Graphite is another allotrope of carbon, where each carbon atom is bonded to three other carbon atoms in layers. The layers are held together by weak van der Waals forces, which allow for the movement of electrons between the layers, making graphite a good conductor of electricity.

Option 4 is correct: In graphite, each carbon atom is linked to three other carbon atoms. This is due to the hexagonal arrangement of carbon atoms in each layer of graphite.