The species that cannot act as an ambidentate ligand is:

Among the following, the compound that has the maximum coordination number is/are:

1. [Co(NH₃)₆]³⁺
2. [Cr(C₂O₄)₃]^3-
3. [CoCl₃(H₂O)₃]
4. All of the above have the same coordination number

The denticity of EDTA is:

Among the following species, the one that is not expected to be a ligand is:

A complex  ion among the following can absorb visible light is:
(At. no. Zn = 30, Sc = 21, Ti = 22, Cr = 24)

1. [Sc(H₂O)₃(NH₃)₃]³⁺

2. [Ti(en)₂ (NH₃)₂]⁴⁺

3. [Cr(NH₃)₆]³⁺

4. [Zn(NH₃)₆]²⁺

The incorrect option among the following is:

The correct statements about ethane-1,2-diamine as a ligand are:

The correct order of increasing field strength of ligands is:

1. ${\mathrm{SCN}}^{- }< {\mathrm{F}}^{- }< {\mathrm{CN}}^{- }< {\mathrm{C}}_2{\mathrm{O}}_4^{2-}$

2. ${\mathrm{F}}^{- }< {\mathrm{SCN}}^{- }< {\mathrm{C}}_2{\mathrm{O}}_4^{2- }< {\mathrm{CN}}^{-}$

3. ${\mathrm{CN}}^{- }< {\mathrm{C}}_2{\mathrm{O}}_4^{2- }< {\mathrm{SCN}}^{- }< {\mathrm{F}}^{-}$

4. ${\mathrm{SCN}}^{- }< {\mathrm{F}}^{- }< {\mathrm{C}}_2{\mathrm{O}}_4^{2- }< {\mathrm{CN}}^{-}$

1. NO₃^- acts as a monodentate ligand.
2. The Ce atom has a coordination number of 12.
3. The shape of the complex ion is an icosahedron.
4. The solution is used as an oxidizing agent.

An example of a sigma bonded organometallic compound is:

1. Ruthenocene                 

2. Grignard's reagent

3. Ferrocene                     

4. Cobaltocene