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AP EAMCET202123 Aug 2021Evening ShiftChemistryChemical Bonding and Molecular StructureActual

Arrange the following molecules according to decreasing order of their O - O bond lengths.

Options

  1. AO ₃> H ₂ O ₂> O ₂
  2. BH ₂ O ₂> O ₃> O ₂
  3. CO ₂> H ₂ O ₂> O ₃
  4. DO ₂> O ₃> H ₂ O ₂

Correct answer

B. H ₂ O ₂> O ₃> O ₂

Step-by-step solution

H ₂ O ₂ has only single bond with bond length 1.41 Å , O ₂ has double bond with bond length 1.33 Å . O ₃ has a partial double bond due to resonance of lone pairs of electrons. So, correct order is H ₂ O ₂> O ₃> O ₂

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