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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper II covers chemistry.

UPSC Combined Geo-Scientist, Prelims · 2022 · Paper II, Chemistry · Q11 of 120

Geo-Scientist Prelims 2022 Chemistry Q11: Which one of the following represents the correct order of electron…

QuestionPeriodic properties / electron affinity

Which one of the following represents the correct order of electron gain enthalpy (electron affinity) among F, Cl, Br and I?

  1. (a) Cl > F > Br > I
  2. (b) F > Cl > Br > I
  3. (c) I > Br > Cl > F
  4. (d) I > Br > F > Cl

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