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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 · 2025 · Paper II, Chemistry · Q5 of 120

Geo-Scientist Prelims 2025 Chemistry Q5: An element forms an ion in the +IV oxidation state with electronic…

QuestionPeriodic table / electronic configuration

An element forms an ion in the +IV oxidation state with electronic configuration : [Xe] 4f¹⁴ 5d¹⁰. Which group and period of the Modern Periodic Table does the element belong to ?

  1. (a) p-block element from Period – 6 and Group – 14
  2. (b) d-block element from Period – 6 and Group – 10
  3. (c) p-block element from Period – 5 and Group – 13
  4. (d) d-block element from Period – 5 and Group – 12

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