Why a carbon atom can't share all the the four valence electron with other carbon atom to form a bond?

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Solution

Dear user,

Your query is quite obvious.

To share all the four valence electrons, a carbon atom must form quadruple bond with another carbon atom.

C₂ is not stable; there is too much electron density between the two small atoms of carbon. That's why carbon doesn't form C₂ but C₄ instead. The number of electrons around each core is the same as for C₄ but the stability is much higher because of the minimization of energy rule.

Hope, this answers your question.

Cheers!!

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