Chemistry - Coordination Chemistry Question with Solution | TestHub

$\left[\mathrm{F}\mathrm{e}\right({\mathrm{H}}_2\mathrm{O}{)}_6{]}^{2+}$and$\left[\mathrm{F}\mathrm{e}\right(\mathrm{C}\mathrm{N}{)}_6{]}^{4-}$differ in magnetic moment and colour.
$\mathrm{F}{\mathrm{e}}^{2+}$in$\left[\mathrm{F}\mathrm{e}\right({\mathrm{H}}_2\mathrm{O}{)}_6{]}^{2+}$

Colour: Pale green$\mathrm{\mu }=4.9$B.M.; octahedral
$\mathrm{F}{\mathrm{e}}^{2+}$in$\left[\mathrm{F}\mathrm{e}\right(\mathrm{C}\mathrm{N}{)}_6{]}^{4-}$

Colour: Yellow;$\mathrm{\mu }=0$; octahedral.