Answer 1

Applications of coordination compounds:

1) In medicine:

• Cisplatin [PtCl2(NH3)2] is useful in treatment of cancer.
• EDTA is useful in treatment of poisoning by lead.

2) In electroplating

Stable complexes with very small dissociation in solution are used for electroplating with silver and gold.

• The complex K[Ag(CN)₂] is used for electroplating with silver
• The complex K[Au(CN)₂] is used for electroplating with gold