oxygen valency is positive or negative

oxygen valency is Always positive Because 6 electron are present in outer most shell of oxygen if outermost valence is greater than 4 then the following formula is used for finding valency 8-valence electron = 0 8-6=2 so it prove valency of oxygen is +2 for more detail click here
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oxygen valency is +2

Oxygen valency is +2 because oxygen belong to overall group 16 or subgroup 6A, it means that 6 electron are present in outermost shell of oxygen if outermost valence is greater than 4 then the following formula is used for finding valency 8-valence electron = 0 8-6=2 so it proves valency ...
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