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JEE Main202624 January 2026Evening ShiftChemistryChemical Bonding and Molecular StructureActual

Pair of species among the following having same bond order as well as paramagnetic character will be-

Options

  1. AO ₂ ⁻, N ₂ ⁺
  2. BO ₂ ⁺, N ₂ ²⁻
  3. CO ₂ ⁻, N ₂ ⁻
  4. DO ₂ ⁺, N ₂ ⁻

Correct answer

D. O ₂ ⁺, N ₂ ⁻

Step-by-step solution

Bond orders and magnetic character: O₂⁻ (BO=1.5, paramagnetic), O₂⁺ (BO=2.5, paramagnetic), O₂²⁻ (BO=1, diamagnetic); N₂⁺ (BO=2.5, paramagnetic), N₂⁻ (BO=2.5, paramagnetic), N₂²⁻ (BO=2, diamagnetic) 1 : BO 1.5 vs 2.5 (different); 2 : BO 2.5 vs 2 (different); 3 : BO 1.5 vs 2.5 (different); 4 : O₂⁺ (BO=2.5, paramagnetic) and N₂⁻ (BO=2.5, paramagnetic) - both same bond order and paramagnetic character

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