What is the energy in joules of one photon of x-ray radiation with a wavelength of 0.120 nm A) 2.50 x 10⁹ J B) 1.66 x 10^-24 J C) 1.66 x 10^-33 J D) 2.50 x 10¹⁸J E) 1.66 x 10^-15J

Question

Quizplus · Accepted Answer

The energy of a photon is calculated using the formula E = hc/λ, where h is Planck's constant (6.626 x 10^-34 J·s), c is the speed of light (3.00 x 10^8 m/s), and λ is the wavelength in meters. Converting 0.120 nm to meters gives 1.20 x 10^-10 m. Plugging in the values, E = (6.626 x 10^-34 J·s)(3.00 x 10^8 m/s) / (1.20 x 10^-10 m) = 1.66 x 10^-15 J.

What Is the Energy in Joules of One Photon of X-Ray