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

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

An example of a sigma bonded organometallic compound is:

1. Ruthenocene                 

2. Grignard's reagent

3. Ferrocene                     

4. Cobaltocene

The correct order of the stoichiometrics of AgCl formed when AgNO₃ in excess is treated with the complexes:- CoCl₃.6NH₃, CoCl₃.5NH₃, CoCl₃.4NH₃, respectively, is :

1. 1 AgCl, 3 AgCl, 2 AgCl

2. 3 AgCl, 1 AgCl, 2 AgCl

3. 3 AgCl, 2 AgCl, 1 AgCl

4. 2 AgCl, 3AgCl,  1 AgCl

The correct statement among the following about [Co(CN)₆]^3- is :

The total number of possible isomers for the complex [Co(en)₂Cl₂]Cl are:
[en-ethylenediamine]

1. 2                         

2. 1

3. 3                         

4. 4

The hybridisation of Ni in the complex [Ni(CN)₄]^2- is:
(Atomic number of Ni = 28)

1. dsp²                               

2. sp³

3. d²sp²                             

4. d²sp³

The complex that is used as an anticancer agent is:

1. mer-[Co(NH₃)₃Cl₃         

2. cis-[PtCl₂(NH₃)₂]

3. cis-K₂[PtCl₂ Br₂]           

4. Na₂CoCl₄

Of the following complex ions, the diamagnetic complex is:

1. [Ni(CN)₄]^2-                       

2. [CuCl₄]^2-

3. [CoF₆]^3-                           

4. [NiCl₄]^2-

The complexes [CO(NH₃)₆][Cr(CN)₆] and [Cr(NH₃)₆][Co(CN)₆] are examples of: