NEET UG CHEMISTRY MCQ: CO-ORDINATION COMPOUNDS

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Among

\left[\mathrm{Ni}(\mathrm{CO})_4\right],\left[\mathrm{NiCl}_4\right]^{2-},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right] \mathrm{Cl}

\mathrm{Na}_3\left[\mathrm{CoF}_6\right], \mathrm{Na}_2 \mathrm{O}_2

and

\mathrm{CsO}_2

, the total number of paramagnetic species is

View answer and explanation

Correct option: A

Option A is correct because only three species, namely [NiCl4]2-, Na3[CoF6], and CsO2, are paramagnetic among the given compounds.

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\left[ {\mathrm{PtC}{\mathrm{l}_2}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_4}} \right]\mathrm{B}{\mathrm{r}_2}\mathrm{\;and\;}\left[ {\mathrm{PtB}{\mathrm{r}_2}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_4}} \right]\mathrm{C}{\mathrm{l}_2}\mathrm{\;}

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