what do you mean by valency? mention oxygen valeny
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the number of electrons present in outer most shell is know as their valency.
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The capability of an atom to lose or gain it's valence electrons in order to complete it's valence shell(last shell) is known as valency.
The valency of oxygen is 2 . It's electronic configuration is 2,6. So it needs 2 electron to complete it's octet.
The valency of oxygen is 2 . It's electronic configuration is 2,6. So it needs 2 electron to complete it's octet.
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