In a particular isomer of $[Co(NH_3)_4Cl_2]^0$,the $Cl-Co-Cl$ angle is $90^\circ$. This isomer is known as:

Which of the following does not exhibit geometrical isomerism?

Draw the structures of the geometrical isomers of $[Fe(NH_3)_2(CN)_4]^-$.

Coordination isomerism is caused by the interchange of ligands between the

In which of the following orders are the given complex ions arranged correctly with respect to their decreasing spin-only magnetic moment?
$(i)$ $[FeF_{6}]^{3-}$
$(ii)$ $[Co(NH_{3})_{6}]^{3+}$
$(iii)$ $[NiCl_{4}]^{2-}$
$(iv)$ $[Cu(NH_{3})_{4}]^{2+}$

The one that is not expected to show isomerism is: