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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 · Q3 of 120

Geo-Scientist Prelims 2023 Chemistry Q3: The electronic configuration of an ion M³⁺ generated from an…

Questionf-block / electronic configuration

The electronic configuration of an ion M³⁺ generated from an element with atomic number 58 is :

  1. (a) [Xe]4f¹ 5d¹ 6s²
  2. (b) [Xe]4f¹
  3. (c) [Rn]5f³ 6d¹ 7s²
  4. (d) [Rn]5f²

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