MCQ
Relation between $(A)$ and $(B)$ is


- A$G.I.$
- ✓positional isomer
- Cenantiomer
- Dchain isomer


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$I$. Valence bond theory cannot explain the color exhibited by transition metal complexes
$II$. Valence bond theory can predict quantitatively the magnetic properties of transition metal complexes
$III$. Valence bond theory cannot distinguish ligands as weak and strong field ones
$Pb \left( NO _{3}\right)_{2} \stackrel{673 K }{\longrightarrow} A + PbO + O _{2}$
$A \stackrel{\text { Dimerise }}{\longrightarrow} B$