What is the total number of moles of ions produced when one mole of $[Co(NH_3)_3Cl_3]$ is completely dissociated?

Which of the following complexes contains an ambidentate ligand?

In the complex $K[Cr(H_2O)_2(C_2O_4)_2] \cdot 3H_2O$,the oxidation state and coordination number of the central metal ion are . . . . . . and . . . . . . respectively.

Identify the homoleptic complex from the following:

$A$ complex compound of $Co^{3+}$ with molecular formula $CoCl_{x} \cdot yNH_3$ gives a total of $3$ ions when dissolved in water. How many $Cl^{-}$ ions satisfy both primary and secondary valencies in this complex?

Which of the following complexes contains only anionic ligands?