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NEET 2013
Exam
NEET
Year
2013
Subject
Chemistry
Chapter
Chemical Bonding and Molecular Structure

NEET 2013 · Chemistry · Chemical Bonding and Molecular Structure

The pair of species that has the same bond order in the following...

The pair of species that has the same bond order in the following is:

Options

  1. ACO,NO+\mathrm{CO}, \mathrm{NO}^{+}
  2. BNO−,CN−\mathrm{NO}^{-}, \mathrm{CN}^{-}
  3. CO2, N2\mathrm{O}_2, \mathrm{~N}_2
  4. DO2, B2\mathrm{O}_2, \mathrm{~B}_2

Correct answer

A. CO,NO+\mathrm{CO}, \mathrm{NO}^{+}

Step-by-step solution

Both CO\mathrm{CO} and NO+\mathrm{NO}^{+}have 14 electrons. The electronic configuration is σ1s2\sigma 1 s^2 σ∗1s2σ2s2σ∗2s2σ2p2zπ2pz2=π2py2\sigma^* 1 s^2 \sigma 2 s^2 \sigma^* 2 s^2 \sigma 2 p^2 z \pi 2 p_z^2=\pi 2 p_y^2 Bond order =10−42=3=\frac{10-4}{2}=3
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