Question

What is the electronic configuration valency of magnesium ninth class

Answer 1

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Atomic number of magnesium is 12 and it's electronic configuration is 2,8,2. Valency is number of electrons gain or loss to achieve noble has configuration I.e. fully filled octet. Since magnesium has 2 electrons in it's outermost shell, hence it's valency is 2 I.e.

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Answer 2

magnesium has valency of 2 .

with electronic configuration :- 2,8,2