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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2024 · Paper I, General Studies · Q35 of 120

Geo-Scientist Prelims 2024 General Studies Q35: Which one of the following conditions is *not* correct for the…

QuestionChemical bonding / MO theory (LCAO)

Which one of the following conditions is *not* correct for the combination of atomic orbitals to form molecular orbitals ?

  1. (a) The combining atomic orbitals must have same or nearly the same energy.
  2. (b) The combining atomic orbitals must show lateral overlap with each other.
  3. (c) The combining atomic orbitals must have the same symmetry about the molecular axis.
  4. (d) The combining atomic orbitals must overlap to the maximum extent.

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