How many ions are produced from $[Co(NH_3)_6]Cl_3$ in solution?

Which of the following complexes contains an ambidentate ligand?

Number of ambidentate ligands in a representative metal complex $[M(en)(SCN)_4]$ is $[en = \text{ethylenediamine}]$

The correct order of the stoichiometries of $AgCl$ formed when $AgNO_3$ in excess is treated with the complexes $CoCl_3 \cdot 6NH_3$,$CoCl_3 \cdot 5NH_3$,and $CoCl_3 \cdot 4NH_3$ respectively is:

Select the correct statement about the given complex $[Co(NH_3)_4Cl_2]Cl$.

Explain the terms 'Coordination Entity' and 'Central Atom/Ion' in the context of coordination compounds.