For complex ion/compound formation reactions (I) $\mathrm{Co}^{3+}(\mathrm{aq})+\mathrm{EDTA}^{4-} \longrightarrow \mathrm{P}$ (II) $\mathrm{Ni}^{2+}(\mathrm{aq})+\mathrm{dmg}($ excess $) \stackrel{\mathrm{NH}_{4} \mathrm{OH}}{\longrightarrow} \mathrm{Q}$ (III) $\mathrm{Zn}^{2+}(\mathrm{aq})+$ gly…

Question

For complex ion/compound formation reactions
(I) $\mathrm{Co}^{3+}(\mathrm{aq})+\mathrm{EDTA}^{4-} \longrightarrow \mathrm{P}$
(II) $\mathrm{Ni}^{2+}(\mathrm{aq})+\mathrm{dmg}($ excess $) \stackrel{\mathrm{NH}_{4} \mathrm{OH}}{\longrightarrow} \mathrm{Q}$
(III) $\mathrm{Zn}^{2+}(\mathrm{aq})+$ gly $($ excess $) \longrightarrow \mathrm{R}$
(IV) $\mathrm{Pt}^{4+}(\mathrm{aq})+$ en $($ excess $) \longrightarrow \mathrm{S}$
which of the following complex ion/compound does not exhibit optical activity?

Aicharya · Accepted Answer

$\mathrm{Ni}^{2+}(\mathrm{aq})$ with DMG (dimethylglyoxime) form square planar complex which is obtically inactive. While $[\mathrm{Co}(\mathrm{EDTA})]^{-},\left[\mathrm{Zn}(\mathrm{gly})_{2}ight]^{2-}$
and $\left[\mathrm{Pt}(\mathrm{en})_{3}ight]^{4+}$ are optically active as they do not have P.O.S. *

For complex ion/compound formation reactions (I) $\mathrm{Co}^{3+}(\mathrm{aq})+\mathrm{EDTA}^{4-}…

Solution