Question

Which of the following has hihest bond order? (i) nitrogen. (ii) oxygen (iii) helium (iv) hydrogen

Answer 1

Nitrogen is having the highest bond order.
$$\begin{gathered} Bondorder=\frac{1}{2}\left[n_b-n_a\right] \\ {N}_{2}bondorder=\frac{1}{2}\left[10-4\right]=3(N\equiv N) \\ {O}_{2}bondorder=\frac{1}{2}\left[10-6\right]=2(O=O) \\ H{e}_{2}bondorder=\frac{1}{2}\left[2-2\right]=0\left(unstable\right) \\ {H}_{2}bondorder=\frac{1}{2}\left[2-0\right]=1(H-H) \end{gathered}$$