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UPSC Combined Geo-Scientist

Chemist

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

Mains Paper II covers physical chemistry.

UPSC Combined Geo-Scientist, Mains · 2016 · Mains Paper II

Q13(a)(iii). Information for bond length

Question

What additional information is needed to calculate the bond length of this diatomic molecule? Explain.

Answer in brief

The isotopic masses of the two atoms, hence their reduced mass, are needed.

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The full model answer

As written for the answer booklet: the diagram carries the working, the lines stay short. Read here only; it is not offered as a download.

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CoversInformation for bond lengthRotational spectroscopy

All parts of Question 13