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UPSC Combined Geo-Scientist

Chemist

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

Mains Paper III covers analytical and organic chemistry.

UPSC Combined Geo-Scientist, Mains · 2017 · Mains Paper III

Q10(a). Halogen isotope clusters

Question

Give relative molecular-ion isotope intensities for CH₂Br₂ and CH₂Cl₂.

Answer in brief

CH₂Br₂: M:M+2:M+4≈1:2:1. CH₂Cl₂: approximately 9:6:1.

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CoversHalogen isotope clustersMass spectrometry

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