Question

Energy of one mole of photons having a wavelength of
$50 \times {10}^{ - 6}$
is​

Answer 1

The energy of a photon is equal to the product of the speed of light, or 3.0 x 108 m/s, and Planck's constant, identified as 6.63 x 10-34, divided by the wavelength. Therefore, using the example problem the energy of a photon would be equal to 3.9 x 10-19 Joules.