JEE Chemistry Practice Question
Among $[\mathrm{Ni(CO)}_{4}]$, $[\mathrm{NiCl}_{4}]^{2-}$, $[\mathrm{Co(NH_3)_{4}Cl_2}]\mathrm{Cl}$, $\mathrm{Na_3}[\mathrm{CoF_6}]$, $\mathrm{Na_2O_2}$ and $\mathrm{CsO_2}$ number of paramagnetic compounds is
- A.2
- B.3
- C.4
- D.5
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