Question $19$

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This stabilization of coordination compounds due to chelation is called the chelate effect. Which of the following is the most stable complex species?

Select one:

a$.Fe(CO)5$

b$.[Fe(CN)6{]}^{3-}$

c$.[Fe(H2O)6{]}^{3+}$

d$.[Fe(C2O4)3{]}^{3+}$