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The bond order of nitrogen molecule is

Question and options

The bond order of nitrogen molecule is
  1. 2
  2. 2.5
  3. 3
  4. 3.5

Answer and explanation

Correct answer: C - 3
N2\mathrm{N_2} has 10 valence electrons in MOs: 8 bonding and 2 antibonding, so bond order =(8−2)/2=3= (8 - 2)/2 = 3 (triple bond). A bond order of 2.5 belongs to the ions N2+\mathrm{N_2^+} and N2−\mathrm{N_2^-}, not the neutral molecule.

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