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Question
There are two electrons in the outermost orbit of the magnesium atom. Hence, the valency of magnesium is
There are two electrons in the outermost orbit of the magnesium atom. Hence, the valency of magnesium is
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Solution
The elements which have 1, 2, 3 electrons in their outermost shell it’s valency is 1, 2, 3 respectively But if the number of electrons in their outermost shell is 4, 5, 6, 7, 8 then their valency will be ( 8 – number of electron )
Example : Let’s consider an element which has 6 outermost electrons in its outermost shell so it’s valency will be 8 – 6 = 2
Example : Let’s consider an element which has 6 outermost electrons in its outermost shell so it’s valency will be 8 – 6 = 2
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and ………… are isotopes of chlorine.