12. Among Ni(CO), [Ni(CN),] and [NiCl] (a) Ni(CO), and [Ni(CN),]- are diamagnetic and NiCl is paramagentic...

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12. Among Ni(CO), [Ni(CN),] and [NiCl₂]² (a) Ni(CO), and [Ni(CN),]²- are diamagnetic and NiCl is paramagentic (b) Ni(CO), and NiC12- are diamagnetic and Ni(CN), is paramagnetic (c) Ni(CO), is diamagnetic and [Ni(CN)] and NiCl are paramagnetic (d) NiCl and [Ni(CN),]²- are diamagnetic and Ni(CO), is paramagnetic 12. Among Ni(CO), [Ni(CN),] and [NiCl₂]² (a) Ni(CO), and [Ni(CN),]²- are diamagnetic and NiCl is paramagentic (b) Ni(CO), and NiC12- are diamagnetic and Ni(CN), is paramagnetic (c) Ni(CO), is diamagnetic and [Ni(CN)] and NiCl are paramagnetic (d) NiCl and [Ni(CN),]²- are diamagnetic and Ni(CO), is paramagnetic