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Chemical Bonding and Molecular Structure question

2011 · Q56
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Chemical Bonding and Molecular Structure question

2011 · Q56

NEETChemistryChemical Bonding and Molecular StructureMCQ+4 / −1
The pairs of species of oxygen and their magnetic behaviours are noted below. Which of the following presents the correct description?
  1. A
    O2−,O22−O_2^ - ,O_2^{2 - }O2−​,O22−​ - Both diamagnetic
  2. B
    O2+,O2O_2^ + ,{O_2}O2+​,O2​ - Both paramagnetic
  3. C
    O, O22−O_{2}^{2-}O22−​ - Both paramagnetic
  4. D
    O+,O22−{O^ + },O_2^{2 - }O+,O22−​ - Both paramagnetic
View written solutionFree

Correct answer: B

O2+ = KKσ2s2 σ2s2 σ2pz2 (π2px2 = π2py2) (π2px1)

O2 = KKσ2s2 σ2s2 σ2pz2 (π2px2 = π2py2) (π2px 1 = π2py1)

O2 and O2+ contain unpaired electron in π ABMO so paramagnetic.

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