why the valency of oxide is 2
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When we say valency of oxide ion is -2 then it means that oxygen has gained two electrons in order to complete it's octet because oxygen has 6 electrons in its outermost shell and it wants to attain stability. As it can't lose 6 electrons, it gains 2 electrons and hence has a valency of
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1
Answer:
When we say valency of oxide ion is -2 then it means that oxygen has gained two electrons in order to complete it's octet because oxygen has 6 electrons in its outermost shell and it wants to attain stability. As it can't lose 6 electrons, it gains 2 electrons and hence has a valency of -2.
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