The incorrect option among the following is:

1.	[Co(NO2)(H2O)(en)2]Cl2, [CoCl(NO2)(en)2]Cl·H2O	Hydrate isomerism
2.	[Cu(NH3)4[PtCl4], [CuCl(NH3)3][PtCl3(NH3)]	Co-ordination isomerism
3.	[Ni(CN)(H2O)(NH3)4]Cl, [NiCl(H2O)(NH3)4]CN	Ionization isomerism
4.	[Cr(NO2)(NH3)5][ZnCl4], [Cr(NO3)(NH3)5][ZnCl4]	Linkage isomerism

The electronic arrangement of an octahedral complex with a ${\mathrm{d}}^4$ configuration, if ∆₀ < pairing energy is:

1. ${\mathrm{t}}_{2\mathrm{g}}^4{\mathrm{e}}_{\mathrm{g}}^0$                       

2. ${\mathrm{e}}_{\mathrm{g}}^4{\mathrm{t}}_{2\mathrm{g}}^0$               

3. ${\mathrm{t}}_{2\mathrm{g}}^3{\mathrm{e}}_{\mathrm{g}}^1$           

4. ${\mathrm{e}}_{\mathrm{g}}^2{\mathrm{t}}_{2\mathrm{g}}^2$

[Co(NH₃)₄(NO₂)₂]Cl can show:

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

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

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 sum of the coordination number and oxidation number of the metal M in the complex [M(en)₂(C₂O₄)]Cl is:

An ion, among the following, that has a magnetic moment of 2.84 BM is:
(At. no. Ni = 28, Ti = 22, Cr = 24, Co = 27)

1. Ni²⁺
2. Ti³⁺
3. Cr²⁺
4. Co²⁺

Cobalt(III) chloride forms several octahedral complexes with ammonia.
A compound among the following that does not give a test for chloride ions with silver nitrate at 25 °C is:

The species that cannot act as an ambidentate ligand is: