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NEET2005ChemistryChemical Bonding and Molecular StructureActual

The correct order in which the O - O bond length increases in the following is:

Options

  1. AO ₂ < H ₂ O ₂ < O ₃
  2. BO ₃ < H ₂ O ₂ < O ₂
  3. CH ₂ O ₂ < O ₂ < O ₂
  4. DO ₂ < O ₃ < H ₂ O ₂

Correct answer

D. O ₂ < O ₃ < H ₂ O ₂

Step-by-step solution

The bond Length decreases with increase of bond order which is the multiplicity of bond. If BO is 1 its a single bond; 2 for double bond and 3 for triple bond. The bond length of O - O in H ₂ O ₂ is 147.5pm, in O ₃ is 128 pm and in O ₂ it is 121 pm .

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