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

AIIMS 2013 · Chemistry · Chemical Bonding and Molecular Structure

Total number of antibonding electrons present in O_2 will be

Total number of antibonding electrons present in O2\mathrm{O}_2 will be

Options

  1. A66
  2. B88
  3. C44
  4. D22

Correct answer

A. 66

Step-by-step solution

O2(σ1s)2(σ∗1s)2(σ2s)2(σ∗2s)2(σ2pz)2(π2px2=π2py2)(π∗2px1=π∗2py1)\begin{aligned} & \mathrm{O}_2(\sigma 1 s)^2\left(\sigma^* 1 s\right)^2(\sigma 2 s)^2\left(\sigma^* 2 s\right)^2\left(\sigma 2 p_z\right)^2\left(\pi 2 p_x^2=\pi 2 p_y^2\right) \\ & \left(\pi^* 2 p_x{ }^1=\pi^* 2 p_y^1\right)\end{aligned} Thus, there are total 6 electrons in antibonding orbitals
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