Q 11 :

The set which does not have ambidentate ligand(s) is                    [2023]

• ${\mathrm{EDTA}}^{4-},{\mathrm{NCS}}^{-},{\mathrm{C}}_2{\mathrm{O}}_4^{2-}$

   

• ${\mathrm{NO}}_2^{-},{\mathrm{C}}_2{\mathrm{O}}_4^{2-},{\mathrm{EDTA}}^{4-}$

   

• ${\mathrm{C}}_2{\mathrm{O}}_4^{2-},\text{ethylene diammine},{\mathrm{H}}_2\mathrm{O}$

   

• ${\mathrm{C}}_2{\mathrm{O}}_4^{2-},{\mathrm{NO}}_2^{-},{\mathrm{NCS}}^{-}$

   

Q 12 :

The complex that dissolves in water is                [2023]

• ${\left({\mathrm{NH}}_4\right)}_3\left[\mathrm{As}{\left({\mathrm{Mo}}_3{\mathrm{O}}_{10}\right)}_4\right]$

   

• ${\mathrm{K}}_3\left[\mathrm{Co}{\left({\mathrm{NO}}_2\right)}_6\right]$

   

• $\left[{\mathrm{Fe}}_3{\left(\mathrm{OH}\right)}_2{\left(\mathrm{OAc}\right)}_6\right]\mathrm{Cl}$

   

• ${\mathrm{Fe}}_4{\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6\right]}_3$

   

Q 13 :

The denticity of the ligand present in the Fehling’s reagent is ________.            [2023]

Q 14 :

Number of ambidentate ligands in a representative metal complex $\left[\mathrm{M}\right(\mathrm{en}\left){\left(\mathrm{SCN}\right)}_4\right]$ is ________.  [en = ethylenediamine]               [2023]

Q 15 :

The sum of oxidation state of the metals in $\mathrm{Fe}{\left(\mathrm{CO}\right)}_5,{\mathrm{VO}}^{2+}$ and ${\mathrm{WO}}_3$ is ________.          [2023]