Chemistry - Coordination Chemistry Question with Solution | TestHub

Species must not contain single unpaired

${\mathrm{O}}_2^{+}\to {\mathrm{\sigma }}_{1 \mathrm{s}}^2<{\mathrm{\sigma }}_{1 \mathrm{s}}^{*2}<{\mathrm{\sigma }}_{2 \mathrm{s}}^2<{\mathrm{\sigma }}_{2 \mathrm{s}}^{*2}<{\mathrm{\sigma }}_{2\mathrm{pz}}^2<{\mathrm{\pi }}_{2\mathrm{px}}^2={\mathrm{\pi }}_{2\mathrm{py}}^2<{\mathrm{\pi }}_{2\mathrm{px}}^{*1}={\mathrm{\pi }}_{2\mathrm{py}}^{*0}$

unpaired ${\mathrm{e}}^{-}=1\therefore \mathrm{\mu }=1.73 \mathrm{BM}$

(1) ${\mathrm{Cu}}^{+}{\mathrm{I}}^{-}{\mathrm{Cu}}^{+}\to \left[\mathrm{Ar}\right]3{ \mathrm{d}}^{10}\therefore$ unpaired ${\mathrm{e}}^{-}=0$

${\mathrm{I}}^{-}\to \left[\mathrm{Xe}\right]\therefore$ unpaired ${\mathrm{e}}^{-}=0$

therefore $\mathrm{\mu }=0$

$3. \left[\mathrm{Cu}{\left({\mathrm{NH}}_3\right)}_4\right]{\mathrm{Cl}}_2$

$\mathrm{Cu}\to \left[\mathrm{A}\right]3{ \mathrm{d}}^3\therefore$ unpaired $=1\therefore \mathrm{\mu }=1.73 \mathrm{BM}$

$4. {\mathrm{O}}_2^{-}\to \mathrm{d}$

${\mathrm{\sigma }}_{1 \mathrm{s}}^2<{\mathrm{\sigma }}_{1 \mathrm{s}}^{{*}_2}<{\mathrm{\sigma }}_{2 \mathrm{s}}^2<{\mathrm{\sigma }}_{2 \mathrm{s}}^{*2}<{\mathrm{\sigma }}_{2\mathrm{pz}}^2<{\mathrm{\pi }}_{2\mathrm{px}}^2={\mathrm{\pi }}_{2\mathrm{py}}^2<{\mathrm{\pi }}_{2\mathrm{px}}^{*2}={\mathrm{\pi }}_{2\mathrm{py}}^{*1}$

1 Unpaired electron

$\therefore$ unpaired $\therefore \mathrm{\mu }=1.73 \mathrm{BM}$