Chemistry - Coordination Chemistry Question with Solution | TestHub

(A) $\stackrel{\oplus }{[\mathrm{Fe}}{\left({\mathrm{H}}_2\mathrm{O}\right)}_5\stackrel{\oplus }{\mathrm{NO}}]{\mathrm{SO}}_4\Rightarrow$

(B) $\left[\mathrm{Cu}{\left({\mathrm{NH}}_3\right)}_4\right]{\mathrm{SO}}_4\Rightarrow$

(C) ${\mathrm{K}}_4\left[\mathrm{Fe}(\mathrm{CN}{)}_6\right]={\mathrm{Fe}}^{2+}\left(3{\mathrm{d}}^6\right)+6{\mathrm{CN}}^{-}(\mathrm{SFL})$ here ${\mathrm{Fe}}^{2+}$ becomes diamagnetic/low spin