If $N$ is bonded to the central metal atom in $SCN^-$,what will be the name of this ligand?

Diethylene triamine is:

$A$ ligand can also be regarded as

An excess of $AgNO_3$ is added to $100 \ mL$ of a $0.05 \ M$ solution of tetraaquadichloridochromium$(III)$ chloride. The number of moles of $AgCl$ precipitated will be . . . . . . $\times 10^{-3}$. (Nearest integer)

The coordination number of a central metal atom in a complex can be determined by $......$.

The number of neutral molecules or negative groups attached to the central metal atom in a complex ion is called: