In graphite, electrons are

Options

A. localised on each C-atom
B. localised on every third C-atom
C. spread out between the structure
D. Both (b) and (c )

Answer

D

Explanation

Structure of graphite consist of a two dimensional sheet like network joined together in hexagonal rings. These layers are held together by weak van der Waals's forces . In graphite each carbon atom is bonded to three others formi.g `sp^(2)` hydrid bonds. The fourth electrons forms a `pi`-bond.
Graphite is a conductor of electricity which is due to the fact that all the carbon bonds being not satisfied. Thus, some of the electrons are free to move through the crystal.