The bond order and magnetic behaviour of O 2 - ion are, respectively :

The bond order and magnetic behaviour of O2- ion are, respectively :
  1. 1.5 and diamagnetic.
  2. 1.5 and paramagnetic.
  3. 2 and diamagnetic.
  4. 1 and paramagnetic

Solution

O2-(Total electron =17){ Bond order =1.5, Paramagnetic }

σ1 s2,σ⋆1 s2,σ2 s2,σ⋆2 s2,σ2Pz2,π2Px2=π2Py2,π*2Px2=π*2Py1,σ⋆2Pz0

Number of unpaired electron =1

Bond order =nb-na2=10-72=1.5

Asked in: JEE Main 2021 (26 Aug Shift 2)

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