How many electrons could there be in the outermost orbit of the atom of an element whose valency is 2?
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last orbit can have a maximum of 8 electrons.
if the valency is +2 it has 2 electrons in the outermost shell to donate or share with another element and of the valency is -2 then it has 6 electrons in outermost shell and requires 2 electrons.
if the valency is +2 it has 2 electrons in the outermost shell to donate or share with another element and of the valency is -2 then it has 6 electrons in outermost shell and requires 2 electrons.
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