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NTA Abhyas JEE Main2020Chemistryp Block Elements (Group 15, 16, 17 & 18)Practice

N O 2 and N 2 O 4 are two forms of nitrogen dioxide. One exists in gaseous state while other in liquid state. The nature of N O 2 and N 2 O 4 forms are

Options

  1. Aboth are paramagnetic
  2. Bboth are diamagnetic
  3. CN O 2 is paramagnetic while N 2 O 4 is diamagnetic
  4. DN O 2 is diamagnetic while N 2 O 4 is paramagnetic

Correct answer

C. N O 2 is paramagnetic while N 2 O 4 is diamagnetic

Step-by-step solution

N O 2 is an odd electron molecule so N O 2 is paramagnetic The dimer, N 2 O 4 , has no unpaired electron so it is diamagnetic.

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