Consider the following isomerisms:
$1.$ Ionization
$2.$ Hydrate
$3.$ Linkage
$4.$ Geometrical
$5.$ Optical
Which isomerisms are exhibited by $[Cr(NH_3)_2(OH)_2Cl_2]^-$?

Which one of the following is expected to be a paramagnetic complex?

Which of the following statements is correct?

The magnetic moments of the following,arranged in decreasing order,will be:-
$(i)$ $Co^{3+}$ (Octahedral complex with a strong field ligand)
$(ii)$ $Co^{3+}$ (Octahedral complex with a weak field ligand like $F^{-}$)
$(iii)$ $Co^{2+}$ (Tetrahedral complex)
$(iv)$ $Co^{2+}$ (Square planar complex)

Magnetic moment of $d^6$ low spin complex is ........ $B.M.$

In nitroprusside ion,the iron and $NO$ exist as $Fe^{II}$ and $NO^+$ rather than $Fe^{III}$ and $NO$. These forms can be differentiated by