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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 · Q4 of 120

Geo-Scientist Prelims 2023 Chemistry Q4: Which one of the following rules for filling of atomic orbitals is…

QuestionAtomic structure / filling rules

Which one of the following rules for filling of atomic orbitals is violated in the electronic configuration 1s² 2s² 2pₓ² 2p_y¹ ?

  1. (a) Hund’s rule of maximum multiplicity
  2. (b) Pauli’s exclusion principle
  3. (c) Aufbau principle
  4. (d) Slater’s rule

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