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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 · 2017 · Mains Paper I

Q11(c). d-one and d-nine octahedral terms

Question

Write the ground state term symbols (LS coupling) for d¹ octahedral and d⁹ octahedral.

Answer in brief

Both free-ion parents are ²D; the octahedral ground states are ²T_(2g) for d¹ and ²Eg for d⁹.

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Coversd-oned-nine octahedral termsLS coupling and crystal fields

All parts of Question 11