7. The valency of hydrogen in H.O is 1. What is the valency of magnesium in Mgo ?
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Explanation:
mg has valency 2 and O has also 2 then its valency is 1
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Answer:
Valency of magnesium and oxygen in MgO is two and two respectively. For magnesium, valency is equal to the number of electrons (two) in valence shell. For oxygen, valency is equal to eight minus the number of electrons present in the outermost shell (8−6=2).
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