Indian Forest Service (Mains), Chemistry optional · 2016 · Paper I

Q6(c)(i). IUPAC names of two complexes

5 marks
Topic: Coordination chemistry
Question only

Question

Write the IUPAC nomenclature of the following:
(1) K₃[Fe(CN)₅·NO]
(2) [Co(NO₂)₃·(NH₃)₃]

Model answer

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Coversalphabetical orderferratecharge numbernitrito-κ N

All parts of Question 6

6(a)(i) Crystal field stabilisation energy and the factors that fix it10 marks
6(a)(ii) CFSE and magnetic moments of FeCl₃.6H₂O and K₄[Fe(CN)₆]10 marks
6(b)(i) General electronic configurations of the 4f and 5f elements5 marks
6(b)(ii) Lanthanide contraction; effect on 4f and 5d chemistry5 marks
6(c)(i) IUPAC names of two complexes5 marks
6(c)(ii) Ce³⁺ colourless, Ti³⁺ purple5 marks