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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 · 2024 · Paper II, Chemistry · Q5 of 120

Geo-Scientist Prelims 2024 Chemistry Q5: The electronic configuration of an element A is [Xe]4f¹5d¹6s² and…

Questionf-block / lanthanides

The electronic configuration of an element A is [Xe]4f¹5d¹6s² and that of an element B is [Xe]4f³6s². The elements A and B are

  1. (a) transition element and lanthanide, respectively
  2. (b) lanthanide and actinide, respectively
  3. (c) transition element and actinide, respectively
  4. (d) both lanthanides

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