Thermodynamically the most stable form of carbon is
diamond
graphite
fullerenes
coal
Answer the following questions :
(a) Why is graphite a good conductor of electricity but not diamond ?
(b) Why is diamond very hard ?
(c) What are fullerenes ? Name the most common fullerene.
(d) What impurity is present in black diamond ?
(a) diamond (b) graphite
(c) fullerenes (d) coal