What is the maximum number of double bonds that a carbon atom can form?

The maximum number of double bonds that a carbon atom can form is two

Explanation:

Carbon atoms combine covalently with hydrogen and other non metals, such as oxygen, nitrogen etc.

Atomic number of carbon is 6 and it forms electronic configuration of 2, 4 ( 1s², 2s² 2p²)

Carbon has 4 outer most (valence) electron which it shares with other atoms that it forms a compound with. Again double bond corresponds to a pair of electron, then the 4 valence electron can only form 2 double bonds.

Thus, the maximum number of double bonds that a carbon atom can form is two

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