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NEET levelSingle correct optionDifficulty 1 of 3pb003

Graphite conducts electricity along its layers because

Aeach carbon is $s p^{3}$ hybridised and has four free valence electrons
Beach carbon is $s p^{2}$ hybridised and has one delocalised $π$ electron
Cit contains free $C X^{+}$ ions
Dthe layers are held together by strong covalent bonds

Answer: B

In graphite each C uses three

s p^{2}

orbitals for

σ

bonds in a plane; the fourth electron in the unhybridised

p

orbital is delocalised over the layer and moves under an applied potential. Hence the first option.

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