Final answer:
The wavelength of an x-ray photon with a frequency of 5 x 10^18 Hz is 6 x 10^-11 meters (60 picometers).
Step-by-step explanation:
The wavelength of an x-ray photon with a frequency of 5 x 1018 Hz is determined using the formula λ = c/f, where λ represents the wavelength, c is the speed of light in a vacuum (approximately 3 x 108 m/s), and f is the frequency of the photon.
Plugging in the values, we get:
λ = c / f
= (3 x 108 m/s) / (5 x 1018 Hz)
= 6 x 10-11 meters (60 picometers).