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Grade: 12
        
Why is [Fe(CN)6]3− a low spin complex even though it has a free electron?
one month ago

Answers : (2)

Arun
23537 Points
							
Fe(CN)6]3- is a low-spin complex, whereas [Fe(NCS)6]3- is a high-spin complex. Iron is in +3 oxidation state in both the complexes. octahedral structure resulting from elongation along the z axis
one month ago
Vikas TU
10081 Points
							
Dear student 
High spin due to present of unpair electron and when there is no unpair electron in metal then it is low spin
According to Spectrochemical series CN is strong field ligand and it can pairing of electron But H2O is weak field ligand it can't pairing of electron
So [Fe(CN)6]-3 a low spin complex and [Fe(H2O)6]+3] a high spin complex
Good Luck 
one month ago
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