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Class X Sciences[papers from previous years]State the reason why carbon can neither formC4+ cations norC4− anions but forms covalent compound.Also state

the reason to explain why covalent compounds:(i) are bad conductors of electricity.(ii) have low melting and boiling points.


Carbon cannot form above compounds because carbon cannot give or take 4   electrons due to its tetravalency and its polarising power.
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