Assertion (A) : Valency of magnesium and oxygen atom is same.

Reason (R) : Magnesium loses 2 electrons while oxygen atoms gains 2 electrons to complete its octet.

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Solution

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Similar questions

(a) one of the oxygen atoms has gained electrons

(b) one of the oxygen atoms has gained protons

(d) the two oxygen atoms are isobars

Assertion (A) : The valency of oxygen atom is 6.

O_{2}

O_{2}

Statement A: Valency is always equal to the number of valence electrons in an atom.

Statement R: The oxygen atom has six electrons, it shows a valency of 2.

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