The correct order of increasing bond length of `F_2, N_2, Cl_2 and O_2` is

Options

A. `O_2 lt N_2 lt Cl_2 lt F_2`
B. `N_2 lt O_2 lt F_2 lt Cl_2`
C. `Cl_2 lt O_2 lt N_2 lt F_2`
D. `F_2 lt Cl_2 lt O_2 lt N_2`

Answer

B

Explanation

As the multiplicity of the bond increases, the bond distance decreases, since N, O and F are the elements of the same period, their bond length is In the order
`N_2lt O_2 lt F_2`
Further since chlorine is bigger In size than F, therefore bond distance In`F_2` is smaller than in `Cl_2`.