Electrical Resistivity:

The electrical resistivity measures the ability of a substance to conduct electricity. The resistivity of the various carbon allotropes span that between semiconducting to insulating. This behavior is a consequence of the bonding nature between the carbon atoms within the substance.

Form	Resistivity (Microohm-cm)
Diamond	2.7 x 109
Graphite	1375.0
C60

 

Magnetic Susceptibility:

The magnetic susceptibility measures how the electrons within the carbon interacts with one another. The diamagnetic (negative, repelled by a magnetic field) behavior indicates that the electrons within the carbon allotropes are paired, strongly indicative of covalent bonding.

Form	Susceptibility     x 106 (emu/mole)
Diamond	-5.9
Graphite	-6.0
C60