Homework Statement
The X-ray spectrum of molybdenum has a particular characteristic spectral line of
wavelength 6.6 *10^–11 m. The ionisation energy of molybdenum is 20 keV.
Deduce that the energy of an X-ray photon of wavelength 6.6*10^–11 m is 19 keV.
Homework Equations
E=h*f...
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