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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 · 2023 · Paper II, Chemistry · Q22 of 120

Geo-Scientist Prelims 2023 Chemistry Q22: Which one of the following represents the correct order of…

QuestionChemical bonding / Fajans’ rules

Which one of the following represents the correct order of polarizing power among Al³⁺, Na⁺, and Mg²⁺ ?

  1. (a) Na⁺ < Mg²⁺ < Al³⁺
  2. (b) Al³⁺ < Mg²⁺ < Na⁺
  3. (c) Na⁺ < Al³⁺ < Mg²⁺
  4. (d) Al³⁺ < Na⁺ < Mg²⁺

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