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Chemical Bonding and Molecular Structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryChemical Bonding and Molecular Structure3 Marks
Question
  1. Write the molecular orbital configuration of $\text{O}^+_2.$ Calculate its bond order and predict its magnetic behaviour.
  2. Using VSEPR model, predict the geometery of SF molecule.
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Answer

  1. $\text{O}^+_2(15):\sigma\text{ls}^2\ \stackrel{*\ \ \ \ \ }{\sigma\text{ls}^2}\sigma\text{ls}^2\ \stackrel{*\ \ \ \ \ }{\sigma\text{ls}^2}\ \sigma2\text{s}^2\ \sigma2\text{p}_\text{z}^2\ \pi\text{2p}_\text{x}\ \pi\text{2p}_\text{y}^2\ \stackrel{*\ \ \ \ \ \ \ \ \ }{\pi2\text{p}_\text{x}^1}$
$\text{B.O.}=\frac12(10-5)=\frac52$

It is paramagnetic.
  1. It has 6 pb of electrons.
$\therefore$ it has octahedral geometry.

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