JEE Advanced 2016 Paper 1 Chemistry Q4

Chemistry · Coordination Chemistry: Structure & Bonding · Atoms, Elements & the Periodic Table

Problem

Among

\ce{[Ni(CO)4]}

\ce{[NiCl4]^2-}

\ce{[Co(NH3)4Cl2]Cl}

\ce{Na3[CoF6]}

\ce{Na2O2}

and

\ce{CsO2}

, the total number of paramagnetic compounds is