question_answer 48)

    The stabilisation of coordination compounds due to chelation is called the chelate effect. Which of the following is the most stable complex species? (a)                  (b)      (c)            (d)

Answer:

                    (c) Chelation (formation of cycle by linkage between metal ion and ligand) stabilises the coordination compound. The ligand which chelates the metal ion are known as chelating ligand. Here, only  is a coordination compound which contains oxalate ion as a chelating ligand. Hence, it stabilises coordination compound by chelating  ion.