Question

If an element has two electrons in its outermost shell, then it is likely to
be _____________

Answer 1

helium, mg , ca

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Answer 2

The group no indicates the valency , so here in this case there are 2 electrons in outermost shell , hence the valency is 2 .

Thus the element behind to group 2 of the Periodic table .

Some examples are - Beryllium ( Be) -2,2. Magnesium ( Mg ) - 2,8,2 , Calcium ( Ca ) - 2,8,8,2 . these are also known as Alkaline Earth Metals .

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