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Which of the following shows the correct decreasing order of the hydration enthalphy of the given ions ? 

Option: 1

Rb^+ > K^+ > Cs^+ > Na^+


Option: 2

Na^+ > K^+ > Rb^+ > Cs^+


Option: 3

K> Na^+ >Rb^+ > Cs^+


Option: 4

Cs^+ > Rb^+ > K^+ > Na ^+


Answers (1)

best_answer

Hydration enthalpy -

The amount of energy released when one mole of the ion dissolves in large amount of water forming an infinite dilute solution

- wherein

It is an exothermic process

 

 Hydration enthalphy decrease with the increase in size of the ion 

Option (2) is correct answer

 

Posted by

sudhir.kumar

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