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Given below are two statements labeled as Assertion (A) and Reason (R) 

Assertion (A): Ionisation enthalpy of Fe2+ is lower than the Mn2+ 

Reason (R): Fe2+ has 3d54s1 configuration, making the state highly stable 

Select the most appropriate answer from the options given below: 

(a) Both A and R are true and R is the correct explanation of A. 

(b) Both A and R are true but R is not the correct explanation of A. 

(c) A is true but R is false. 

(d) A is false but R is true.

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Correct option is (c) A is true but R is false. Reason is false, as there is no loss of exchange energy in d6 configuration.

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