The octahedral complex will not show geometrical isomerism is :
(A and B are monodentate ligands)

1. [MA₄B₂]

2. [MA₅B]

3. [MA₂B₄]

4. [MA₃B₃]

The ionization isomer of [Cr(H₂O)₄Cl(NO₂)]Cl is:

The number of geometrical isomers possible for a square planar complex $[\mathrm{Mabcd}{]}^{\pm \mathrm{n}}$ are

(1) 2

(2) 3

(3) 4

(4) 5

[Cr(en)₂Br₂]⁺ can show

(1) Optical isomerism

(2) Geometrical isomerism

(3) Both (1) and (2)

(4) Neither (1) nor (2)

How many hydrate isomers are possible for the molecular formula CoCl₃,6H₂O?

1. One

2. Two

3. Three

4. Four