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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 · Q5 of 120

Geo-Scientist Prelims 2023 Chemistry Q5: Which one of the following pair of elements will have similar…

Questiond-block / lanthanide contraction

Which one of the following pair of elements will have similar atomic radii in d-block of the periodic table ?

  1. (a) Sc, Ti
  2. (b) La, Hf
  3. (c) Zr, Hf
  4. (d) Fe, Ru

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