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The correct order of the O-O bond length in O_{2},H_{2}O_{2} and O_{3}.

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  1. O2- Molecular oxygen (O2) has a double bond (O=O) between the oxygen atoms. Bond order = 2, Bond length ≈ 121 pm.
  2. H2O2- In hydrogen peroxide, the two oxygen atoms are connected by a single bond (O–O).Bond order = 1, Bond length ≈ 147 pm.
  3. O3 - It is a resonance hybrid: $ O–O↔ O=O$  (bond order between single and double: 1.5). Bond Order: 1.5, Bond Length: ~128 pm.
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Saniya Khatri

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