During the change of $O_2$ to $O_2^-$, the incoming electron goes to the orbital

  • [JEE MAIN 2019]
  • A

    $\pi_{2p_y}$

  • B

    $\pi_{2p_x}$

  • C

    ${\pi^*}_{2p_x}$

  • D

    ${\sigma ^*}_{2p_z}$

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In which of the following pairs molecules have bond order three and are isoelectronics

Of the species, $NO , NO ^{+}, NO ^{2+}, NO ^{-},$ the one with minimum bond strength is :

  • [JEE MAIN 2020]

During change of $O_2$ to $O_2^-$ ion, the electron adds on which one of the following orbitals?

  • [AIPMT 2012]

Compare the relative stability of the following species and indicate their magnetic properties;

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Which of the following molecular orbitals has maximum number of nodal planes ?