Question

what is the valency of mg​

Answer 1

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As we know magnesium is an alkaline metal and it is in the 2nd group of periodic table. In this case of magnesium it has an electronic configuration of 2,8. So we can see that valence electrons are 2 and hence the valency is 2. Hence its oxidation number is +2.

Answer 2

Answer:

The atomic number of Magnesium is 12.

So, it's electronic configuration is 2,8,2

Explanation:

Hence, Magnesium loses 2 electrons and forms cation.

So, it's valency is 2.

Hope this answer provides a detailed explanation!