The red line observed in the line spectrum for hydrogen has a wavelength of 656 nm. What is the energy of a photon of this light? A)3.03 × 10^-28 J B)3.03 × 10^-19 J C)3.30 × 10²⁷ J D)3.30 × 10¹⁸ J E)1.30 × 10^-22 J

Question

Quizplus · Accepted Answer

The energy of a photon is given by the equation:
E = hc/λ
Where h is Planck's constant (6.626 x 10^-34 J.s), c is the speed of light (2.998 x 10^8 m/s), and λ is the wavelength of the light in meters.
Converting the given wavelength of 656 nm to meters:
λ = 656 x 10^-9 m
Substituting the values into the equation:
E = (6.626 x 10^-34 J.s) x (2.998 x 10^8 m/s) / (656 x 10^-9 m)
E = 3.03 x 10^-19 J
Therefore, the answer is B, 3.03 x 10^-19 J.

The Red Line Observed in the Line Spectrum for Hydrogen