Chemistry - Coordination Chemistry Question with Solution | TestHub

(A) ${\left[\mathrm{Fe}(\mathrm{CN}{)}_5\mathrm{NO}\right]}^{-2}\to$ Heteroleptic, ${\mathrm{Fe}}^{+2},3{\mathrm{d}}^6$,

${\mathrm{t}}_{2\mathrm{g}}{}^6{\mathrm{e}}_{\mathrm{g}}{}^0,{\mathrm{d}}^2{\mathrm{sp}}^3$, Low spin (3d series + SFL)

(B) ${\left[{\mathrm{CoF}}_6\right]}^{-3}\to$ Homoleptic, ${\mathrm{sp}}^3{\mathrm{d}}^2$, High spin,

${\mathrm{Co}}^{+3},3{\mathrm{d}}^6$ ( 3 d series + WFL)

(C) ${\left[\mathrm{Fe}(\mathrm{CN}{)}_6\right]}^{-4}\to$ Homoleptic

${\mathrm{Fe}}^{+2},3{\mathrm{d}}^6,{\mathrm{d}}^2{\mathrm{sp}}^3,{\mathrm{t}}_{2\mathrm{g}}{}^6{\mathrm{eg}}^0$ Low spin (3d series + SFL)

(D) ${\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]}^{+3}\to$ Homoleptic,

${\mathrm{Co}}^{+3}3{\mathrm{d}}^6,{\mathrm{d}}^2{\mathrm{sp}}^3$, ${\mathrm{t}}_{2\mathrm{g}}{}^6{\mathrm{eg}}^0$, Low spin (3d series + SFL)

(E) ${\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{+2}\to$ Homoleptic

${\mathrm{Cr}}^{+2}3{\mathrm{d}}^4,{\mathrm{d}}^2{\mathrm{sp}}^3$, High spin ${\mathrm{t}}_{2\mathrm{g}}{}^3{\mathrm{e}}_{\mathrm{g}}{}^1$ (3d series + WFL)