Indicate the complex ion that shows geometrical isomerism:
1. [Cr(H₂O)₄ Cl₂]⁺
2. [Pt(NH₃)₃ Cl]
3. [Co(NH₃)₆]³⁺
4. [Co(CN)₆]^3-

Due to the presence of ambidentate ligands coordination compounds show isomerism. Palladium complexes of the type $\mathrm{Pd}{( {\mathrm{C}}_6{\mathrm{H}}_5 )}_2(\mathrm{NCS}{)}_2$ and $\left[Pd{\left(C_6{H}_5\right)}_2{\left(SCN\right)}_2\right]$ are:

1. Linkage isomers   
2. Coordination isomers
3. Ionization isomers 
4. Geometrical isomers

The compounds [Co(SO${}_4$ (NH${}_3$)${}_5$ ]Br and [Co(SO${}_4$ (NH${}_3$)${}_5$] Cl classified as:

What kind of isomerism exists between [Cr(H₂O)₆]Cl₃ (violet) and [Cr(H₂O)₅Cl]Cl₂⋅H₂O (greyish-green)?

1. Linkage isomerism

2. Solvate isomerism

3. lonisation isomerism

4. Coordination isomerism

Identify the correct statements for the behaviour of ethane -1, 2- diamine as a ligand.

(a) It is a neutral ligand

(b) It is a didentate ligand

(c) It is a chelating ligand

(d) It is a unidentate ligand

Choose the correct option
1. (a, b, c)
2. (b, c, d)
3. (a, c, d)
4. (a, b, d)

Which of the following complexes show linkage isomerism?
(a) $\hspace{0.17em}{\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5\left({\mathrm{NO}}_2\right)\right]}^{2+}$
(b)$[\mathrm{Co}{\left({\mathrm{H}}_2\mathrm{O}\right)}_5\mathrm{CO}{]}^{3+}$
(c) $[\mathrm{Cr}{\left({\mathrm{NH}}_3\right)}_5\mathrm{SCN}{]}^{2+}$
(d)${\left[\mathrm{Fe}{\left(\mathrm{en}\right)}_2{\mathrm{Cl}}_2\right]}^{+}$

Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)

Match the complex species given in Column I with the possible isomerism given in Column II and assign the correct code.

Codes:

          A         B          C           D

1.       2          3           4           1

2.       3          1           5           2

3.       5          4           3           2

4.       4          1           2           3

Given below are two statements: 

Given below are two statements: