When ${N_2}$ goes to $N_2^ + ,$ the $N - N$ bond distance ..... and when ${O_2}$ goes to $O_2^ + ,$ the $O - O$ bond distance .......

  • [IIT 1996]
  • A

    Decrease, increase

  • B

    Increase, decrease

  • C

    Increase, increase

  • D

    None of these

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$AX$ is a covalent diatomic molecule where $A$ and $X$ are second row elements of periodic table. Based on Molecular orbital theory, the bond order of $AX$ is $2.5$. The total number of electrons in $AX$ is ........... (Round off to the Nearest Integer).

  • [JEE MAIN 2021]

Delocalised molecular orbitals are found in