The valency of magnesium is _____.

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Solution

The correct option is B
+2

Magnesium has electrons in the outermost shell and on losing them it attains stable electronic configuration and completes its octet. So the valency of magnesium is 2. Example: $M g C l_{2}$ , Mg has a charge of +2 i.e. it has lost two electrons.

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The valency of magnesium is _____.

The correct option is B +2 Magnesium has electrons in the outermost shell and on losing them it attains stable electronic configuration and completes its octet. So the valency of magnesium is 2. Example: MgCl2, Mg has a charge of +2 i.e. it has lost two electrons.

The correct option is B
+2

Magnesium has electrons in the outermost shell and on losing them it attains stable electronic configuration and completes its octet. So the valency of magnesium is 2. Example: $M g C l_{2}$ , Mg has a charge of +2 i.e. it has lost two electrons.