Chemistry - Atomic Structure Question with Solution | TestHub

The energy required to break one mole of $\mathrm{Cl}-\mathrm{Cl}$ bonds in ${\mathrm{Cl}}_2$ is $242\mathrm{kJ}{\mathrm{mol}}^{-1}$. The longest wavelength of light capable of breaking a single $\mathrm{Cl}-\mathrm{Cl}$ bond is $(\mathrm{c}=3\times 10^8{\mathrm{ms}}^{-1}$ and ${\mathrm{N}}_{\mathrm{A}}=6.02\times 10^{23}{\mathrm{mol}}^{-1})$