The stabilization of coordination compounds due to chelation is c… - Vidyadip

MCQ

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

A
$[Fe(CO)_5]$
✓
$[Fe(CN)_6]^{-3}$
C
$[Fe(C_2O_4)_3]^{-3}$
D
$[Fe(H_2O)_6]^{+3}$

✓

Answer

Correct option: B.

$[Fe(CN)_6]^{-3}$

b
Chelation (formation of cycle by linkage between metal ion and ligand) stabilizes the coordination compound. The ligand which chelates the metal ion are known as chelating ligand. Here, only $\left[F e\left(C_{2} O_{4}\right)_{3}\right]^{3}$ is a coordination compound which contains oxalate ion as a chelating ligand. Hence, it stabilizes coordination compound by chelating $F e^{3+}$ ion.

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