Why are most carbon compounds pior conductors of electricity
Answers
Because it has the propreties of metal
Why are most carbon compounds poor conductors of electricity?
Ans.
Pure carbon, in the form of graphite, not diamond, is actually a very good conductor, due to the aromaticity of the rings in the hexagonal 2-d planar layers that make up the crystal. The aromatic p-electrons are very delocalized and they flow freely in between the layers when a voltage is applied.
what happens when you put a graphite pencil straight across a circuit at low voltage, only 13 V was used here, I think. Because the resistance is very low, a high current is developed, and the ohmic heating, which goes up with the square of the current becomes large enough to destroy the pencil - it eventually bursts into flames, leaving just the graphite core. Just put a real resistor or a light bulb in series into the circuit and this result could have beeen completely prevented, by limiting the current.
Not all carbon compounds are the same. In diamond the electrons are far less free to move, since the hybridization is different and each atom has four covalent bonds in the crystal structure
Hope it will help you.
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