Graphite is a covalent network crystal but what is its exceptional property?
High melting point
Low volatile
Bad conduction
Good conduction
Increased ______ causes the carbon atoms in diamond to split.
Thermal energy
Wind energy
Kinetic energy
Vibrational energy
Which crystal does not have free electrons for electric conduction?
ionic crystal
covalent network crystal
both (a) and (b)
none of these
