During change of O2 to \text{O}_{2}^{-} ion, the electron adds on which one of the following orbitals?

  • Option 1)

    \pi orbital

  • Option 2)

    \sigma^{*} orbital

  • Option 3)

    \sigma orbital

  • Option 4)

    \pi^{*} orbital

 

Answers (1)

Molicular orbital of O_{2}

\sigma \left ( 1S^{2} \right )\sigma ^{*}\left ( 1S^{2} \right )\sigma \left ( 2S^{2} \right )\sigma ^{*}\left ( 2S^{2} \right )

\sigma\left ( 2p_{z} \right ^{2})\pi \left ( 2p_{x} \right^{2}} )\pi \left ( 2p_{y} \right ^{2}})\pi ^{*}\left ( 2p_{x}^{'} \right )\pi ^{*}\left ( 2p_{y}^{'} \right )

Thus the incoming electron during change of O_{2} to O_{2}^{-} will enter in\pi ^{*}2p_{x}


Option 1)

\pi orbital

Option 2)

\sigma^{*} orbital

Option 3)

\sigma orbital

Option 4)

\pi^{*} orbital

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