The Red Light from a HeNe Laboratory Laser Results from a Transition

Multiple Choice

The red light from a HeNe laboratory laser results from a transition in Ne.Determine the energy difference between the states if the wavelength of the light given off is 634 nm.(h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10−¹⁹ J,and 1 nm = 10−⁹ m)

A) 2.22 eV
B) 1.43 eV
C) 1.96 eV
D) 2.04 eV