Chemistry - Coordination Chemistry Question with Solution | TestHub

${\left[{\mathrm{CoCl}}_4\right]}^{2-}<{\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]}^{2+}<{\left[\mathrm{Co}(\mathrm{CN}{)}_6\right]}^{3-}$

${\left[\mathrm{Os}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{+2}<{\left[\mathrm{Ru}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{+2}<{\left[\mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{+2}$

${\left[\mathrm{Co}\left({\mathrm{H}}_2\mathrm{O}\right)\right]}^{+3}<{\left[\mathrm{Co}(\mathrm{CN}{)}_6\right]}^{-3}<{\left[\mathrm{Ir}(\mathrm{CN}{)}_6\right]}^{-3}$

${\left[{\mathrm{NiCl}}_4\right]}^{-2}<{\left[\mathrm{Ni}{\left({\mathrm{NH}}_3\right)}_6\right]}^{+2}<{\left[\mathrm{Ni}(\mathrm{CN}{)}_4\right]}^{-2}$