Question:

Match List - I with List - II.

List - I (Molecule)List - II (Bond order)
(a)\(\mathrm{Ne_2}\)(i)1
(b)\(\mathrm{N_2}\)(ii)2
(c)\(\mathrm{F_2}\)(iii)0
(d)\(\mathrm{O_2}\)(iv)3

Choose the correct answer from the options given below :

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Bond order \(= \frac{1}{2}(N_b - N_a)\) from the molecular orbital configuration of each molecule.
Updated On: Nov 4, 2026
  • (a) \(\to\) (i), (b) \(\to\) (ii), (c) \(\to\) (iii), (d) \(\to\) (iv)
  • (a) \(\to\) (iv), (b) \(\to\) (iii), (c) \(\to\) (ii), (d) \(\to\) (i)
  • (a) \(\to\) (iii), (b) \(\to\) (iv), (c) \(\to\) (i), (d) \(\to\) (ii)
  • (a) \(\to\) (ii), (b) \(\to\) (i), (c) \(\to\) (iv), (d) \(\to\) (iii)
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The Correct Option is C

Solution and Explanation

Bond order \(= \frac{1}{2}(N_b - N_a)\).
\(\mathrm{Ne_2}\) (20 electrons): \(N_b = 10,\ N_a = 10\), bond order \(= 0\) (iii).
\(\mathrm{N_2}\) (14 electrons): \(N_b = 10,\ N_a = 4\), bond order \(= 3\) (iv).
\(\mathrm{F_2}\) (18 electrons): \(N_b = 10,\ N_a = 8\), bond order \(= 1\) (i).
\(\mathrm{O_2}\) (16 electrons): \(N_b = 10,\ N_a = 6\), bond order \(= 2\) (ii).
So (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii).
Answer: (3) (a) \(\to\) (iii), (b) \(\to\) (iv), (c) \(\to\) (i), (d) \(\to\) (ii)
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