Assertion (A): The two `Fe` atoms in `Fe_(3)O_(4)` hace different oxidation numbers.
Reason (R ): `Fe^(2+)` ions decolourise `KMnO_(4)` solution.

Options

A. If both `(A)` and `(R )` are correct and `(R )` is the correct explanation of `(A)`.
B. If both `(A)` and `(R )` are correct but `(R )` is not the correct explanation of `(A)`.
C. If `(A)` is correct but `(R )` is incorrect.
D. If `(A)` and `(R )` are incorrect.

Answer

B

Explanation

Assertion: `Fe_(3)O_(4)-=(overset(+2)(FeO).overset(+3)(Fe_(2)O_(3)))`
The oxidation states of `Fe` in `FeO` and `Fe_(2)O_(3)` are `+2` and `+3`.
Reason : `Fe^(2+)+underset(("Pink"))(MnO_(4)^(ө))rarrFe^(3+)underset(("Colourless"))(Mn^(2+))`
Both `(A)` and `(R )` are correct, but `(R )` is not the correct explanation for `(A)`.