Question

Explain, giving reason, why carbon neither forms c+4 cations nor c-4 anions, but forms covalent compounds

Answer 1

Explanation:

the electronic configuration of carbon is 1s2 2s2 2p2

To get in it's outer shell it has to gain 4 more electrons to form C4-.The electro negativity of carbon is 2.5 and it's nucleus has 6 protons.Thereforeit is difficult for a nucleus with 6 protons to hold 10 electrons.Hence carbon cannot form C4-ions so easily.

If carbon loses 4 electrons from the outer shell,it has to form C4+ions.This requires a huge amount of energy which is not available normally.Therefore there is no possibility to form C+4 formation also remote possibility.

So, carbon has to satisfy it's tetravalency by sharing electrons with other atoms.

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