These questions consist of two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses:
Assertion: Potassium ferrocyanide is diamagnetic whereas potassium ferricyanide is paramagnetic.
Reason: Crystal field splitting in ferrocyanide ion is greater than that of ferricyanide ion.

Options

A. If both assertion and reason are correct and reason is correct explanation for assertion .
B. If both assertion and reason are correct but reason is not correct explanation for assertion .
C. If assertion is correct but reason is incorrect
D. If both assertion and reason are incorrect

Answer

c

Explanation

Correct reason : In `K_4[Fe(CN)_6]`, Fe has +2 oxidation state while `K_3[Fe(CN)_6]` , oxidation state of Fe is +3 , in general , higher the oxidation state of the metal, more is the crystal field splitting . Thus, the crystal field splitting of `K_3[Fe(CN)_6]` is more than that of `K_4[FeCN)_(6)]`.