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

Which of the following statements regarding the complex ion  [Mn(CN)₆]^3- is correct?.

1. It is sp³d² hybridised and octahedral.

2. It is d²sp³ hybridised and octahedral.

3. It is sp³d² hybridised and tetrahedral.

4. It is dsp² hybridised and square planar.

A compound among the following has both fac-mer and optical isomers is:

1. [Co(NH₃)₅(NO₃)]     

2. [Co(en)₃]³⁻

3. [Co(gly)₃]

4. None of the above

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 species that cannot act as an ambidentate ligand is:

Consider the following complex ions P, Q and R,

P = ${\left[{\mathrm{FeF}}_6\right]}^{3-}$

Q = ${\left[\mathrm{V}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}$

and R= ${\left[\mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}$

The correct order of the complex ions, according to their spin-only magnetic moment values (in B.M.) is:

1. R<Q<P

2. Q<R<P

3. R<P<Q

4. Q<P<R

In the context of biological systems, coordination compounds play a crucial role;
identify the incorrect statement from the provided options.

For octahedral complex, the value of the 'spin only' magnetic moment for one of the following configuration is 2.84 BM. The correct one is:

1. d⁴ (in strong ligand field)

2. d⁴ (in weak ligand field)

3. d³ (in weak as well as in strong field)

4. d⁵ (in strong ligand field)

The complex with a square planar shape and dsp² hybridization among the following is:

1. [Ni(CN)₄]^2-

2. [Cu(NH₃)₄]²⁺

3. [PtCl₄]^2-

4. All of these

The denticity of EDTA is: