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UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper I covers inorganic chemistry.

UPSC Combined Geo-Scientist, Mains · 2019 · Mains Paper I

Q6(b). Square-planar and octahedral isomers

Question

What are geometrical isomers? Draw all possible isomers of (i) [Pt(NH₃)(Py)Cl·Br] (ii) [Co(NH₃)₃(NO₂)₃].

Answer in brief

The square-planar Pt complex has three geometrical isomers; the octahedral Co complex has fac and mer forms.

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CoversSquare-planaroctahedral isomersGeometrical isomerism

All parts of Question 6