NEET Chemistry Coordination Compounds Questions Solved

The 'brown ring' formed at the junction of two layers in the test of nitrate is due to the formation of a complex ion, FeH2O5NO2+. Which of the following statemens are correct for this complex [u=3.87 B.M.)

 (i) Oxidation state of Fe is +1 and NO exists as NO+.

 (ii) The complex ion is in octahedral geometry as attained by sp3d2 hybridisation.

(iii) The complex is paramagnetic and has three unpaired electrons due to transfer of electron from NO to Fe2+.

(iv) The complex is in octahedral geometry as attained by d2sp3 hybridisation.

 (v) The brown colour of the complex is attributed to d-d transition of electron.


(A) (i), (ii) and (v)                                       

(B) (iii), (iv) and (v)

(C) (i), (ii) and (iii)                                       

(D) (ii), (iii) and (v)

Concept Videos :-

#1 | Definition of Double Salts & Coordination Compounds
#2 | Some Basic Concepts of Coordination Compounds
#4 | Stable & Unstable Complex
#5 | Perfect & Imperfect Complex
#6 | Basic Terms of Coordination Compounds

Concept Questions :-

Coordination comp,Introduction and Classification / Nomenclature
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