Total number of unpaired electrons present in the central metal atoms/ions of [Ni(CO)4], [NiCl4] 2– — JEE Mains Chemistry Past Papers Chemistry Question

💡 Solution & Explanation

In [Ni(CO)4] , Ni 0 : 3d 8 4s Hybridisation state : sp Unpaired electron = 0 In [NiCl4] 2– , Ni 2+ : 3d Hybridisation state : sp Unpaired electron = 2 In [PtCl4] 2– , Pt 2+ : 5d Hybridisation state : dsp Unpaired electron = 0 In [Ni(CN)4] 2–, Ni 2+ : 3d Hybridisation state : dsp Unpaired electron = 0 In [Pt(NH3)2Cl2], Pt 2+ : 5d Hybridisation state : dsp Unpaired electron = 0