A sharp green line in the emission spectrum of mercury vapor can be observed at a wavelength of 520 nm. What would be the energy of one photon of this green light? (Useful constants: C = 3.00 x 10⁸ m/s and h = 6.626 x 10⁻³⁴ J-s)
1) 3.4 x 10⁻⁴⁰ J
2) 3.4 x 10⁻³⁰ J
3) 3.8 x 10⁻²⁹ J
4) 3.8 x 10⁻¹⁹ J
