Green light has a wavelength of 522 nm. Calculate the energy of one photon of green light in Joules.

Answer 1

E = hc/λ

E = 6.626x10^-34 J-sec)(3x10⁸ m) / 522x10^-9 m (note we changed 522 nm to meters since c is in meters)

E = 3.81x10^-19 J