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4.Chemical Bonding and Molecular Structure
medium
In the following the correct bond order sequence is :
A
$\mathrm{O}_{2}^{+}>\mathrm{O}_{2}>\mathrm{O}_{2}^{-}>\mathrm{O}_{2}^{2-}$
B
$\mathrm{O}_{2}>\mathrm{O}_{2}^{-}>\mathrm{O}_{2}^{2-}>\mathrm{O}_{2}^{+}$
C
$\mathrm{O}_{2}^{2-}>\mathrm{O}_{2}^{+}>\mathrm{O}_{2}^{-}>\mathrm{O}_{2}$
D
$\mathrm{O}_{2}^{+}>\mathrm{O}_{2}^{-}>\mathrm{O}_{2}^{2-}>\mathrm{O}_{2}$
(JEE MAIN-2021)
Solution
$\sigma_{1 s}^{2}, \sigma_{1 s}^{* 2}, \sigma_{2 s}^{2}, \sigma_{2 s}^{*}, \sigma_{2 p_{2}}^{2}$
$\pi_{2 p_{x}}^{2}=\pi_{2 p_{y}}^{2}, \pi_{2 p_{x}}^{*_{1}}=\pi_{2 p_{y}}^{*_{1}}, \sigma_{2 p_{2}}^{*}$
Bond order of $\mathrm{O}_{2} \Rightarrow 2$
Bond order of $\mathrm{O}_{2}^{-} \Rightarrow 1.5$
Bond order of $\mathrm{O}_{2}^{2-} \Rightarrow 1$
Bond order of $\mathrm{O}_{2}^{+} \Rightarrow 2.5$
Standard 11
Chemistry
