The correct order of spin-only magnetic
moments among the following is :
(Atomic number : Mn=25, Co=27,
Ni=28, Zn=30)
[ZnCl4 ] 2− > [NiCl 4 ] 2− > [CoCl4 ] 2− > [MnCl 4 ] 2−
[CoCl4 ] 2− > [MnCl 4 ] 2− > [NiCl4 ] 2− > [ZnCl 4 ] 2−
[NiCl 4 ] 2− > [CoCl4 ] 2− > [MnCl 4 ] 2− > [ZnCl4 ] 2−
[MnCl 4 ] 2− > [CoCl4 ] 2− > [NiCl 4 ] 2− > [ZnCl4 ] 2−
As we learnt in
Magnetic Moments (spin only) -
where n= number of unpaired electron.
- wherein
Number of unpaired and corresponding magnetic moments
Spin only magnetic moment number of unpaired electrons
Compound | Number of unpaired electrons |
[MnCl4]2- |
5 |
[CoCl4]2- |
3 |
[NiCl4]2- |
2 |
[ZnCl4]2- |
Zero |
Option 1)
[ZnCl4 ] 2− > [NiCl 4 ] 2− > [CoCl4 ] 2− > [MnCl 4 ] 2−
Option 2)
[CoCl4 ] 2− > [MnCl 4 ] 2− > [NiCl4 ] 2− > [ZnCl 4 ] 2−
Option 3)
[NiCl 4 ] 2− > [CoCl4 ] 2− > [MnCl 4 ] 2− > [ZnCl4 ] 2−
Option 4)
[MnCl 4 ] 2− > [CoCl4 ] 2− > [NiCl 4 ] 2− > [ZnCl4 ] 2−
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