The wavelength of the blue light given off by a mercury

Last updated: 7/30/2022

The wavelength of the blue light given off by a mercury vapor street lamp is 4.36 x 10-7 m. What is the energy of this light in joules 4.56 x 10-28J 4.56 x 10-19 8.67 x 10-32J 8.67 x 10-23J 9.63 x 10-40