AIEEE 2004 Chemistry Solved Paper

[Fe(CN6)]4−− No of unpaired electron =0
[MnCl4]2−− No of unpaired electron =5
[CoCl4]2−− No of unpaired electron =3
NOTE : The greater the number of unpaired electrons, greater the magnitude of magnetic moment. Hence the correct order will be
[MnCl4]−−>[CoCl4]−−>[Fe(CN)6]4−