why does oxygen and nitrogen share electrons instead they can gain 2 and 3 electrons...? can anyone tell the reason behind it..?
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Explanation:
because the atom whose outermost shell have more than four electron
valency of that shell calculated by
valency = 8- number of electron
atom outermost electron valency
O 6 8-6=2
N 5 8-5=3
so these these can gain oxygen can gain two electron and nitrogen can gain three to complete its octet
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