The energy of one mole of photons of radiation of frequency 2 × 10^12 Hz in J mol^-1 is ____. (Nearest integer) [ Given: h =6.626 × 10^-34 J s; N_A…

The energy of one mole of photons of radiation of frequency $\displaystyle 2 \times 10^{12} \mathrm{~Hz}$ in $\displaystyle \mathrm{J} \mathrm{mol}^{-1}$ is $\displaystyle \_\_\_\_$. (Nearest integer) $$\begin{aligned} & {\left[\text { Given }: \mathrm{h}=6.626 \times 10^{-34} \mathrm{~J} \mathrm{~s}\right.} \\ & \left.\mathrm{N}_{\mathrm{A}}=6.022 \times 10^{23} \mathrm{~mol}^{-1}\right] \end{aligned} $$