Among NiCO4,NiCl4−2,CoNH34Cl2Cl,Na3CoF6,Na2O2 and CsO2, the total number of paramagnetic compounds is

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answer is B.

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Detailed Solution

NiCl42−−Cl−weakF.L ∴sp3 Nl2+−[Ar]3d8Na3coF6,F¯ is.weak F.L ∴sp3d2Co3+−[Ar]3d6CsO2− superoxide O21−− odd electron bond

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