The 'brown ring' formed at the junction of two layers in the test of nitrate is due to the formation of a complex ion, 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
(ii) The complex ion is in octahedral geometry as attained by hybridisation.
(iii) The complex is paramagnetic and has three unpaired electrons due to transfer of electron from NO to
(iv) The complex is in octahedral geometry as attained by 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)
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