which of the following will contain convalent double between its atom a) hydrogen b) oxygen c) nacl d) cl2 pkz ans it i will give more points+ if ur ans correct mark as brainlist and give 5 votes.

oxygen

Explanation:

because all other needs one electron but for double bond must be deficiency of atleast 2 electron

Oxygen because the valency of oxygen is 2.

It belongs to the group 6 A so it has total valence electron 6, so in order to complete its valence shell it needs 2 electron.

The part of the atom that is involved in bonding is Valence electrons.