Question

In graphite, one carbon atom is bonded with 3 other carbon atoms. One of the bond is double bond. Hence all the four electrons are contributing in the bonding. Then how free electrons are present in the graphite?

Answer 1

Dear Student,

In graphite, each C atom is linked to 3 other C atoms to form 3 sigma bonds while 4th electron of each C-atom forms π bond. The π electrons are free to move to cause electrical conductivity.