The Stability Of The Following Alkali Metal Chlorides Follows The Order:

Why Kaysons ?

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Question

The stability of the following alkali metal chlorides follows the order:

easy

Solution

Correct option is

KCl > CsCl > NaCl > LiCl

The stability of a compound depends upon its enthalpy of formation, . Evidently more negative the value of , more stable is the compound. Thus option (KCl > CsCl > NaCl > LiCl) is correct, i.e.,

KCl (–428) > CsCl (–424) > NaCl (–400) > LiCl (–398). The values given in parentheses are in kJ mol^–1.