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

1. One

2. Two

3. Three

4. Four

[Cu(NH₃)₄]²⁺ is complex which have

1. Square planar structure and diamagnetic nature

2. Tetrahedral structure and paramagnetic nature

3. Square planar structure and paramagnetic nature

4. Tetrahedral structure and diamagnetic behaviour.

The number of ions formed in K₄[Fe(CN)₆] are

1. 11

2. 5

3. 4

4. 9

Which of the following complex will show geometrical as well as optical isomerism ?

1. [Pt(NH₃)₂Cl₂]

2. [Pt(NH₃)Cl₃]

3. [Pt(en)₂Cl₂]

4. [Pt(en)₃]⁴⁺

The crystal field stabilisation energy for the high spin d⁴ octahedral complex is:

1. -1.8 $∆$_o

2. -1.6 $∆$_o

3. -1.2 $∆$_o

4. -0.6 $∆$_o

The correct statement, among the following, regarding [Mn(CN)₆]^3- is:

1. It is sp³d² hybridised and octahedral in shape

2. It is sp³d² hybridised and tetrahedral in shape

3. It is d²sp³ hybridised and octahedral in shape

4. It is dsp² hybridised and square planar in shape

EAN of Fe in K₃[Fe(CN)₆] is

1. 34

2. 35

3. 36

4. 47

Which of the following has square planar structure?

1. [NiCl₄]^2-

2. [Ni(CO)₄]

3. [Ni(CN)₄]^2-

4. None of these

[Cr(en)₂Br₂]⁺ can show

(1) Optical isomerism

(2) Geometrical isomerism

(3) Both (1) and (2)

(4) Neither (1) nor (2)

The species that cannot act as an ambidentate ligand is: