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UPSC Civil Services (Mains)

Chemistry optional

  • 2 papers
  • 250 marks each
  • 3 h per paper
  • 5 of 8 questions, Q1 and Q5 compulsory

Paper I covers physical and inorganic chemistry.

UPSC Civil Services (Mains), Chemistry optional · 2023 · Paper I

Q6(c). IUPAC names of five complexes

Question

Write the IUPAC names of the following complexes: (i) [Cr(H₂O)₄Cl₂]Cl; (ii) [Co(en)₃][Fe(CN)₆]; (iii) Na[Cr(H₂O)₂(ox)₂]; (iv) [Pd(CO)₂(H₂O)Cl]⁺; (v) Na₄[(H₂O)₄V(μ-OH)₂V(H₂O)₄].

Answer in brief

Tetraaquadichloridochromium(III) chloride; tris(ethane-1,2-diamine)cobalt(III) hexacyanidoferrate(III); sodium diaquabis(oxalato)chromate(III); aquadicarbonylchloridopalladium(II) ion; sodium di-μ-hydroxido-bis[tetraaquavanadate(−I)].

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CoversIUPAC nomenclaturecoordination compoundsbridging ligandoxidation statenaming complexes

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