Arrange the following order in increasing order of magnetic... | CHEMISTRY - GENERAL PROPERTIES OF THE TRANSITION ELEMENTS (D-BLOCK) | SolveeIt | Solveeit

Today, August 24

Question

Arrange the following order in increasing order of magnetic moment -

A

[Mn(CN)₆]^3–< [Fe(CN)₆]^3–< [Fe(CN)₆]^4–

B

[Fe(CN)₆]^3–< [Fe(CN)₆]^4–< [Mn(CN)₆]^3–

C

[Fe(CN)₆]^4–< [Fe(CN)₆]^3–< [Mn(CN)₆]^3–

D

[Fe(CN)₆]^4–< [Mn(CN)₆]^3–< [Fe(CN)₆]^3–

Answer

$Fe(CN)<sub>6</sub>$ ^4–< $Fe(CN)<sub>6</sub>$ ^3–< $Mn(CN)<sub>6</sub>$ ^3–

Explanation

Solution

[Fe(CN)₆]^4– is Ž t_2g⁶ eg⁰ (strong ligand)

[Fe(CN)₆]^3– is Ž t_2g⁵ eg⁰ (strong ligand)

[Mn(CN)₆]^3– is Ž t_2g⁴ eg⁰ (strong ligand)