Which of the following is less stable thermally-

1.	Which of the following is less stable thermally-
Answer» LiF KCl RbF CsF SOLUTION :Thermal stability of a COMPOUND increases with the increasing value of enthalpy of formation. Among the GIVEN compounds the value of enthalpy of formation is MINIMUM `(-428 kJ. Mol^(-1))` for KCl. Hence, it has the lowest thermal stability among the given compounds.

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