Q17 of 26 Page 1

Write the hybridization, magnetic character and shape of [Fe(CN)6]3- [Atomic Number of Fe=26]

(ii) Write down IUPAC name of [Co(NH3)5NO2] (NO3)2.


(i) Fe exists in +3 oxidation state in [Fe(CN)6]3-.


Electronic configuration of Fe+3 = 3d5


FeCN.png


As CN is a strong field ligand, there will be pairing of electrons in d orbital.



Hybridization and shape of [Fe(CN)6]3- is d2sp3 and octahedral respectively.


Since, there is one unpaired electron present therefore, the complex is paramagnetic in nature.


(ii) IUPAC name of [Co(NH3)5NO2] (NO3)2 is Pentaamminenitrocobalt(III) nitrate. The oxidation state of cationic part is +2 thus, oxidation state of metal is +2+1 = 3.


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