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JEE Main 202624 JanuaryEvening Shift
Exam
JEE Main
Year
2026
Date
24 January
Shift
Evening Shift
Subject
Chemistry
Chapter
Chemical Bonding and Molecular Structure

JEE Main 2026 · 24 January · Evening Shift · Chemistry · Chemical Bonding and Molecular Structure

Pair of species among the following having same bond order as well...

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

Options

  1. AO2−,N2+\mathrm{O}_{2}{ }^{-}, \mathrm{N}_{2}{ }^{+}
  2. BO2+,N22−\mathrm{O}_{2}{ }^{+}, \mathrm{N}_{2}{ }^{2-}
  3. CO2−,N2−\mathrm{O}_{2}{ }^{-}, \mathrm{N}_{2}{ }^{-}
  4. DO2+,N2−\mathrm{O}_{2}{ }^{+}, \mathrm{N}_{2}{ }^{-}

Correct answer

D. O2+,N2−\mathrm{O}_{2}{ }^{+}, \mathrm{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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