Which of the following is a chelating ligand?

$A$ coordination complex contains $Co^{3+}$,$Cl^{-}$,and $NH_3$. When dissolved in water,one mole of this complex gives a total of $3$ moles of ions. The complex is

The coordination number of a central metal atom in a complex is determined by

Which of the following is the odd one out?

The complex of $Ni^{2+}$ ion and dimethylglyoxime contains $..........$ number of Hydrogen $(H)$ atoms.

Which among the following complexes is homoleptic and cationic in nature?