When graphite is subjected to an electric arc in the presence of inert atmosphere, it gives

Step-by-step solution

Fullerenes are molecules with 60 carbon atom of which most common is C ₆₀ while others with C ₇₀, C ₇₆, C ₈₀ atoms. Fullerenes can be made in a carbon arc, where two graphite rods are placed with a small gap between them in an inert gas below atmospheric pressure. The carbon of the rods evaporate and convert to give fullerene, where C ₆₀ is main product and C ₇₀ is obtained in small amount.