Question

State the reason why carbon can neither form C⁴⁺ cations nor C⁴⁻ anions but forms covalent compound.

Give a reason why carbon can neither form C⁴⁺ cations nor C⁴⁻ anions but form covalent compounds.

Answer 1

To achieve a stable electron configuration, carbon typically either loses 4 electrons to create a C⁴⁺ cation or gains 4 electrons to produce a C⁴⁻ anion. Both options are significantly energetically unfavorable. Carbon attains a stable electron configuration by sharing electrons via covalent bonding instead of acquiring or losing electrons.

Answer 2

Since it would take a lot of energy to gain or lose four electrons to make C⁴⁺ or C⁴⁻ ions, carbon is unable to do so. Instead, it solves this by sharing electrons, which is how covalent bonding achieves tetravalency.