MCQ
A reaction involving two different reactants
- ACan never be a second order reaction
- ✓Can never be a unimolecular reaction
- CCan never be a bimolecular reaction
- DCan never be a first order reaction
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$(I)\,\,\,\,{N_2} + 2{O_2} \rightleftharpoons 2N{O_2}$
$(II)\,\,\,\,2N{O_2} \rightleftharpoons {N_2} + 2{O_2}$
$(III)\,\,\,\,N{O_2} \rightleftharpoons \frac{1}{2}{N_2} + 2{O_2}$
The correct relation from the following is

$(I)\, Co(III)$ is stabilised in presence of weak field ligands, while $Co(II)$ is stabilised in presence of strong field ligand.
$(II)$ Four coordinated complexes of $Pd(II)$ and $Pt(II)$ are diamagnetic and square planar.
$(III)\,[Ni (CN)_4]^{4-}$ ion and $[Ni (CO)_4]$ are diamagnetic tetrahedral and square planar respectively.
$(IV)\,Ni^{2+}$ ion does not form inner orbital octahedral complexes.
