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NTA Abhyas NEET2020ChemistryChemical Bonding and Molecular StructurePractice

Among the following, the paramagnetic compound is:

Options

  1. ANa 2 O 2
  2. BO 3
  3. CN 2 O
  4. DO 2 −

Correct answer

D. O 2 −

Step-by-step solution

Odd number electron generally indicates paramagnetic nature and even number of electron diamagnetic nature O 2 2 − ⇒ 18 Electron diamagnetic. O 3 ⇒ 24 Electron diamagnetic. N 2 O ⇒ 22 Electron diamagnetic. O 2 − ⇒ 17 Electrons one unpaired electron paramagnetic.

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