Answered

An oxygen molecule contains a double bond because the two atoms of oxygen share a total of
(1) 1 electron (3) 3 electrons
(2) 2 electrons (4) 4 electrons



Answer :

IwAsSoMeGuY
One covalent bond means the share of 2 electrons
So 2 covalent bonds therefore mean that 4 electrons are shared
the answer is 4 
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