Answer:
So wavelength in nm will be [tex]\lambda =0.956\times 10^{-19}nm[/tex]
Explanation:
We have given that the energy = 207 KJ/mol [tex]=207\times 10^3j/mol[/tex]
Speed of light [tex]c=3\times 10^8m/sec[/tex]
Plank's constant [tex]h=6.6\times 10^{-34}J-s[/tex]
According to plank's rule energy of the photon is given by
[tex]E=\frac{hc}{\lambda }[/tex]
[tex]207\times 10^3=\frac{6.6\times 10^{-34}\times 3\times 10^8}{\lambda }[/tex]
[tex]\lambda =0.956\times 10^{-28}m[/tex]
So wavelength in nm will be [tex]\lambda =0.956\times 10^{-19}nm[/tex]
