Match the complexes listed in column-I with characteristic type of isomerism listed in column-II
`{:("Column I","Column II"),((A)CoCl_3. 5NH_3. H_2O,(p)"In one of this isomeric forms, the metal satisfies its secondary valences by only neutral molecules."),((B)Co(NH_3)_5BrSO_4,(q)"The magnetic moment of one of the isomers form is 3.87 B.M."),(( C)CrCl_3. 6H_2O,(r)"Show ionisation isomerism"),((D)Cr(NO_2)_2. 6H_2O,(s)"Show hydrate isomerism"),(,(t)"Show linkage isomerism."):}`

Answer

A-p,s ; B-r ; C-p,q,s ; D-p,s,t

Explanation

(A)`overset(III)([Co(NH_3)_5Cl])Cl_2. H_2O and overset(III)([Co(NH_3)_5H_2O])Cl_3`-hydrate isomerism. In later form all (i.e. six) secondary valences of metal are satisfied by neutral molecules.
(B)`overset(III)([Co(NH_3)_5Br])SO_4 and overset(III)([Co(NH_3)_5SO_4])`Br-ionisation isomerism.
(C )`[Cr(H_2O)_6]Cl_3, [Cr(H_2O)Cl]Cl_2. H_2O` and `[Cr(H_2O)_4Cl_2]Cl.2H_2O`-hydrate isomerism. In first form secondary valences (i.e. six) of the metal are satisfied by only neutral molecules.
Cr(III) has 3 unpaired electrons whether the ligand is weak or strong field , `mu_(B.M.)=sqrt(3(3+2))`=3.87 B.M.
(D)`[Cr(H_2O)_6]NO_2 and [Cr(H_2O)_5 (NO_2)]NO_2 H_2O`-hydrate isomerism
`[Cr(H_2O)_5(NO_2)]NO_2. H_2O and [Cr(H_2O)_5(ONO)]NO_2. H_2O` -linkage isomerism.
In first form secondary valencies (i.e. six) of the metal are satisfied by only neutral molecules. In the complex the Cr is in +1 oxidation state with electron configuration. `[Ar]^(18)3d^5 4s^0`.It contains five unpaired electrons