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The complex ion Fe(NH3)42- is paramagnetic. The shape of this complex is a) octahedral b) tetrahedral...

The complex ion Fe(NH3)42- is paramagnetic. The shape of this complex is

a) octahedral

b) tetrahedral

c) Square planar

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Ans : b) tetrahedral

There are four ammonia ligands bonded to central Fe atom. NH3 is a strong field ligand and since the ion is paramagnetic there are unpaired electrons in the orbital.

This indicates that the shape of ion is tetrahedral as the hybridization of Fe is sp3.

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