What is wavelength of x rays?
In general, X-rays have a wavelength of between 10 and 0.01
nanometers. That's between 10-8 and 10-11 meters. Remember that a
shorter wavelength means a higher frequency, and, therefore, higher
energy.
The frequency range of X-rays is 30 petahertz to 30 exahertz (30
x 1015 Hz to 30 x 1018 Hz) and they have energies in the 120 eV to
120 keV range. (An eV is an electron volt.)
Note that X-rays are of shorter wavelength than visible light,
but not as short as gamma rays.