In complex compounds,the metal-ligand bond is:

Which statement from the following is true for the complex hexamminecobalt$(III)$ chloride?

The compounds having coordinated water are

$I$. $CrCl_3 \cdot 6 H_2 O$

$II$. $BaCl_2 \cdot 2 H_2 O$

$III$. $CuSO_4 \cdot 5 H_2 O$

Assertion : $A$ chelating ligand must possess two or more lone pairs at such a distance that it may form suitable strain-free rings at the metal ion.
Reason : $H_2N-NH_2$ is a chelating ligand.

What is the value of the primary valence of $Co$ in $CoCl_{3}$?

What type of ligand is the oxalate ion?