JEE Main 2004 Chemistry question

The correct order of magnetic moments (spin only values in B.M.) among is

(1)[MnCl_4]^{-2} > [CoCl_4]^{-2} > [Fe(CN)_6]^{-4}Correct
(2)[Fe(CN)_6]^{-4} > [CoCl_4]^{2-} > [MnCl_4]^{2-}
(3)[Fe(CN)_6]^{4-} > [MnCl_4]^{2-} > [CoCl_4]^{2-}
(4)[MnCl_4]^{2-} > [Fe(CN)_6]^{4-} > [CoCl_4]^{2-} (Atomic numbers: Mn = 25; Fe = 26, Co = 27 )

Answer: (1)

Solution

: , weak-field tetrahedral, 5 unpaired ( BM). : , tetrahedral, 3 unpaired (≈ 3.87 BM). :

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-038424