Complex compounds are formed between metal ions and which of the following?

What is an ambidentate ligand?

On the basis of the following observations made with aqueous solutions,assign secondary valences to metals in the following compounds:

Formula	Moles of $AgCl$ precipitated per mole of the compound with excess $AgNO_3$
$(i) PdCl_2 \cdot 4NH_3$	$2$
$(ii) NiCl_2 \cdot 6H_2O$	$2$
$(iii) PtCl_4 \cdot 2HCl$	$0$
$(iv) CoCl_3 \cdot 4NH_3$	$1$
$(v) PtCl_2 \cdot 2NH_3$	$0$

Explain with two examples each of the following: coordination entity,ligand,coordination number,coordination polyhedron,homoleptic and heteroleptic.

Identify the ligands present in cisplatin.

Identify the neutral ligand from the following: