A sample of graphite is exfoliated into single-atom-thick sheets known as graphene
CHEMISTRY · Single correct · GCSE · Chemistry · Bonding, Structure and the Properties of Matter · Bonding, Structure and the Properties of Matter
Problem
A sample of graphite is exfoliated into single-atom-thick sheets known as graphene. Which property is most likely to increase appreciably as a direct result, and why?
(a) Lubricity, because separate layers slide past one another even more readily when completely detached.
(b) Melting point, because isolating each layer increases the number of σ bonds per carbon atom.
(c) Electrical conductivity, because the absence of inter-layer interactions allows π electrons to move with fewer collisions.
(d) Hardness, because removing cleavage planes leaves only strong in-plane covalent bonding.