1. Tardigrade
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  3. Chemistry
  4. The stability of the following alkali metal chlorides follows the order

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Q. The stability of the following alkali metal chlorides follows the order

Jharkhand CECEJharkhand CECE 2014

Solution:

Stability of a compound depends upon its enthalpy of formation $ \Delta {{h}_{f}}. $ The more negative value of $ \Delta {{H}_{f}} $ shows more stability of a compound. Thus, KCI is more stable and
$ \text{LiCl} $ is least stable. $ \Delta {{H }_{f}} $
for $ LiCl=-408.8\,kJ\,mo{{l}^{-1}} $
$ \Delta {{H}_{f}} $ for $ NaCl=-412.5\,kJ\,mo{{l}^{-1}} $
$ \Delta {{H }_{f}} $ for $ CsCl=-433\,kJ\,mo{{l}^{-1}} $
$ \Delta {{H }_{f}} $ for $ KCl=-436\,kJ\,mo{{l}^{-1}} $