The number of paramagnetic metal complex species among [Co(NH3)63+], [Co(C2O4)3]3–, [MnCl6]3–, [Mn(C — JEE Mains Chemistry Past Papers Chemistry Question

💡 Solution & Explanation

[Co(NH3)6]3+ Co3+ 3d6 ,2 ,2 g 2t , g e Diamagnetic (unpaired electron = 0) [Co(C2O4)3]3– Co3+ 3d6 ,2 ,2 g 2t , g e Diamagnetic (unpaired electron = 0) [MnCl6]3– Mn3+ 3d4 ,1 ,1 g 2t ,1 g e Paramagnetic (unpaired electron = 4) [Mn(CN)6]3– Mn3+ 3d4 ,1 ,2 g 2t , g e Paramagnetic (unpaired electron = 2) [CoF6]3– Co3+ 3d6 ,1 ,2 g 2t ,1 g e Paramagnetic (unpaired electron = 4) [Fe(CN)6]3– Fe3+ 3d5 ,2 ,2 g 2t , g e Paramagnetic (unpaired electron = 1) [FeF6]3– Fe3+ 3d5 ,1 ,1 g 2t ,1 g e Paramagnetic (unpaired electron = 5)