The number of paramagnetic species from the following is__________ 4 CN Ni , CO Ni , – 4] NiCl [ 6 C — JEE Mains Chemistry Past Papers Chemistry Question

💡 Solution & Explanation

S.No. Species E.C. Hybridisation Magnetic character (i) [Ni(CN)4]2– Ni2+3d8 dsp2 Diamagnetic (ii) [NiCl4]2– Ni2+3d8 sp3 Paramagnetic (iii) [Cu(CN)4]2+ Cu2+3d9 dsp2 Paramagnetic (iv) [Cu(CN)4]3– Cu+3d10 sp3 Diamagnetic (v) [Fe(CN)6]3– Fe3+3d5 d2sp3 Paramagnetic (vi) [Fe(CN)6]4– Fe2+3d6 d2sp3 Diamagnetic (vii) [Fe(H2O)6]2+ Fe2+3d6 sp3d2 Paramagnetic