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down the group of modern periodic table why the stability of higher valency decreases?

down the group of modern periodic table why the stability of higher valency decreases?

Grade:11

1 Answers

nivetha
39 Points
8 years ago
as you go down a group the size of atom increases. so the distance of the outermost shell from the nucleas also increases. the atom finds it difficult to hold the newly coming electrons occupying the outermost shell..so the stability decreases
 

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