A paramagnetic molecule among the following is:

Molecule/Ion that is diamagnetic in nature is: 

In the option are given sequences of increasing bond order for the following species. The correct option is :
\(\mathrm{O}_2,\mathrm{N}_2,\mathrm{O}^+_2 ~\mathrm{and}~\mathrm{O}^-_2\)  

Paramagnetic species among the following is:

1. CO               

2. ${\mathrm{O}}_2^{-}$

3. CN^-               

4. NO⁺

Which of the following is a diamagnetic species?

1. ${\mathrm{O}}_2$

2. ${\mathrm{O}}_2^{2-}$

3. ${\mathrm{O}}_2^{+}$

4. ${\mathrm{O}}_2^{-}$

What is the correct sequence of bond order for the specified species?

A pair in which both species are not likely to exist is:

The bond order of 1.5 is shown by:  

The relative order of stability of the following species: \(\mathrm{O}_2,\mathrm{O}^+_2,\mathrm{O}^-_2~\mathrm{and}~\mathrm{O}^{2-}_2\) is -

In which of the following pairs of molecules/ions, the central atoms have \(\mathrm{sp}^2\) hybridisation?