With respect to graphite and diamond,which of | vedclass

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(B) Diamond is harder than graphite due to its three-dimensional network structure.$(B)$ Graphite is a good conductor of electricity due to the presen

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$B$ and $D$

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(B) Diamond is harder than graphite due to its three-dimensional network structure.$(B)$ Graphite is a good conductor of electricity due to the presence of free electrons in its layers,whereas diamond is an insulator.$(C)$ Diamond is a better conductor of heat than graphite due to its rigid lattice structure.$(D)$ The $C-C$ bond order in graphite is $\sim 1.5$ (due to resonance),while in diamond it is $1$. Thus,statement $(D)$ is correct.Therefore,statements $(B)$ and $(D)$ are correct.

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