The wavelength of a specific photon in the x-ray is 5 x 10-9 meters. Given that the speed of light is 2.998 x 108 m/s, what would be the frequency of this x-ray?

There is an inverse relationship between the wavelength and frequency, thus, the formula for calculating the frequency of the photon is given as

Frequency = (speed of light / wavelength)

Frequency = (2.998 x 10E8 m/s) / (5 x 10E-9 m)

Frequency = 5.1996 x 10E16 1/s

Therefore the frequency of this x ray is 5.1996 x 10E16 1/s.