Most X-rays have a wavelength ranging from 0.01 to 10 nanometers , corresponding to frequencies in the range 30 petahertz to 30 exahertz ( 3 × 1016 Hz to 3 × 1019 Hz ) and energies in the range 100 eV to 100 keV .
Most X-rays have a wavelength in the range of 0.01 to 10 nanometres . This corresponds with frequencies in the range 30 petahertz to 30 exahertz ( 3 × 1016 Hz to 3 × 1019 Hz ) and energies in the range 100 eV to 100 keV .