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Among [Ni(CO)4], [NiCl4]2- , [Co(NH3)4Cl2]Cl, Na3[CoF6], Na2O2 and CsO2, the total number of paramagnetic compounds is 

(A) 2 

(B) 3 

(C) 4 

(D) 5

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(B) 3 

Number of paramagnetic compounds are 3. 

Following compounds are paramagnetic.

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