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most hydrated cation is :- Ce2+ (aq) La3+ (aq) ba2+ (aq) Cs2+ (aq)

most hydrated cation is :-
  1. Ce2+  (aq)
  2.  La3+  (aq)
  3. ba2+  (aq)
  4. Cs2+ (aq)

Grade:11

1 Answers

Arun
25750 Points
5 years ago
Hydration energy is the amount of energy liberated when an ion gets hydrated that is , it accepts water molecule. e.g. lithium ion is small in size so it accepts large number of water molecule so it's hydration energy is more whereas caesium ion is bigger in size so it accepts less number of water molecule and has less hydration energy. 

Li+

Li+(aq) > Na+(aq) > K+(aq) > Rb+(aq) > Cs+(aq) ( hydrated radius)

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