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AIIMS 2015
Exam
AIIMS
Year
2015
Subject
Chemistry
Chapter
Chemical Bonding and Molecular Structure

AIIMS 2015 · Chemistry · Chemical Bonding and Molecular Structure

Assertion : Molecular nitrogen is less reactive than molecular...

Assertion : Molecular nitrogen is less reactive than molecular oxygen. Reason : The bond length of N2\mathrm{N}_2 is shorter than that of oxygen.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIfboth assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

A. If both assertion and reason are true and reason is the correct explanation of assertion.

Step-by-step solution

Bond order of N2=3\mathrm{N}_2=3, bond order of O2=2\mathrm{O}_2=2. Higher the bond order, shorter is the bond length and higher is the bond dissociation energy i.e., higher stability or lesser reactivity. Thus, N2\mathrm{N}_2 is less reactive than O2\mathrm{O}_2.
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