A) \[{{I}_{0}}\]
B) \[I/{{I}_{0}}\]
C) \[\frac{1}{\sqrt{2}}\]
D) \[\frac{\sqrt{3}}{2}\]
Correct Answer: A
Solution :
The correct option is\[O_{2}^{2-}\]. This species has 18 electrons, which are filled in such a way that all molecular orbitals are fully filled, so diamagnetic. \[\sigma 1{{s}^{2}}\overset{*}{\mathop{\sigma }}\,1{{s}^{2}},\sigma 2{{s}^{2}}\overset{*}{\mathop{\sigma }}\,2{{s}^{2}}\sigma 2p_{z}^{2},\pi 2p_{x}^{2}=\pi 2p_{y}^{2},\] \[{{\pi }^{*}}2p_{x}^{2}={{\pi }^{*}}2p_{y}^{2}\]
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