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Q.

Among [Ni(CO)4],[NiCl4]2−,[Co(NH3)4Cl2]Cl,Na3[CoF6],Na2O2 and CsO2 , the total number of paramagnetic compound are?

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answer is 3.

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Detailed Solution

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Compound/IonMagnetic nature of compound
[Ni(CO)4]Diamagnetic
[NiCl4]2−Paramagnetic
[Co(NH3)4Cl2]ClDiamagnetic
Na3[CoF6]Paramagnetic
Na2O2Diamagnetic
CsO2Paramagnetic

So, total number of paramagnetic compounds are 3.

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