Question

Assertion : Reduction potential of Mn (+3 to +2) is more positive than Fe (+3 to +2). 

Reason : Ionisation potential of Mn is more than that of Fe.

(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 correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

The correct option is (c) A is true but R is false.

Explanation :

Thus, Mn²⁺ has more stable configuration than Mn³⁺ while Fe³⁺ has more stable configuration than Fe²⁺.

Hence, reduction potential for Mn³⁺/Mn²⁺ couple is more positive than Fe³⁺/Fe²⁺.