Molecular Orbital Theory Questions

Given below are two statements:Statement I: A hypothetical diatomic molecule with bond order zero is quite stable.Statement II: As bond order increases, the bond length increases.In the light of the above statements, choose the most appropriate answer from the options given below:

Assertion : ${\text{B}}_2$ molecule is diamagnetic.Reason : The highest occupied molecular orbital is of $\sigma$ type.

Which of these presents the correct order of increasing bond order?

According to $\text{MO}$ theory which of the following lists ranks the nitrogen species in terms of increasing bond order?

Which one of the following species does not exist under normal conditions?

During change of ${\text{O}}_2$ to ${\text{O}}_2^{-}$ ion, the electron adds on which one of the following orbitals?

Four diatomic species are listed below. Identify the correct order in which the bond order is increasing in them:

Bond order of 1.5 is shown by:

The pair of species with the same bond order is:

Decreasing order of stability of ${\text{O}}_2,{\text{O}}_2^{-},{\text{O}}_2^{+}$ and ${\text{O}}_2^{2-}$ is: