TG EAMCET 3 May 2025 Shift 1 Paper

The magnetic moment of a complex depends on the number of unpaired electrons present in it.
Formula: The spin-only magnetic moment is given by µ=√n(n+2) where n is the number of unpaired electrons.
Counting Unpaired Electrons for Each Complex:
I. [Fe(CN)6]4− : Here, n=0. This means there are no unpaired electrons.
II. [MnCl4]2− : Here, n=5. There are five unpaired electrons.
III. [Mn(CN)6]4− : Here, n=1. There is one unpaired electron.
IV. [Cr(NH3)6]3+ : Here, n=3. There are three unpaired electrons.

The complexes with more unpaired electrons will have higher magnetic moments.
So, the order from least to greatest magnetic moment is:
I<III<IV<II