How many ions are produced in aqueous solution of $[Co(H_2O)_6]Cl_2$?

In the complex acetylbromidodicarbonylbis(triethylphosphine)iron$(II)$,the number of $Fe-C$ bond$(s)$ is

$1 \ mol$ of an octahedral metal complex with formula $MCl_{3} \cdot 2 \ L$ on reaction with excess of $AgNO_{3}$ gives $1 \ mol$ of $AgCl$. The denticity of ligand $L$ is ...... . (Integer answer)

When $AgNO_3$ is added to an aqueous solution of a platinum complex,$1/4$ of the total chlorine content is precipitated. Determine the formula of the platinum complex from the given options.

Explain the following term with an example: Hexadentate ligands.

Ligands in a complex salt are