There are two electrons in the outermost orbit of the magnesium atom. Hence, the valency of magnesium is______

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Solution

The element which have 1, 2, 3 electrons in their outermost shell it’s valency is 1, 2, 3 respectively But if number of electron in their outermost shell is 4, 5, 6, 7, 8 then
it’s valency will be ( 8 – that particular electron )
Example = Let’s consider an element which
have 6 outermost electron in their outermost shell so it’s valency will be 8 – 6 = 2

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Q. There are two electrons in the outermost orbit of the magnesium atom. Hence, the valency of magnesium is

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