Question

Which one of the following ions has the largest
size in aqueous solution?
(1) Rb+
(2) Nat
(3) K+
(4) Lit​

Answer 1

Answer:

1) Rb+

Explanation:

For same group elements atomic size/ionic size increase down the group due to increase of principal quantum numbers. Thus the order of atomic size as follows—

Li<Na<K<Rb<Cs<Fr

Li+<Na+<K+<Rb+<Cs+<Fr+

Hope it will help you