Crystal diffraction experiments can be performed using X-rays, or electrons accelerated through appropriate voltage. Which probe has greater energy? An X-ray photon or the electron? (For quantitative comparison, take the wavelength of the probe equal to `1Å`, which is of the order of interatomic spacing in the lattice), `m_(e)=9.11xx10^(-31)kg`.

Explanation

For `lambda=1Å` electron’s energy `= 150 eV`, photon.s energy `= 12.4 keV`. Thus, for the same wavelength, a photon has much greater energy than an electron.