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How to calculate ionization energy of an atom provided energy of the electron at ground state? [closed]
It is given that in ground state the energy of electron in hydrogen atom is $-2.18\times10^{-18}\mathrm{J}$. I'm required to calculate the Ionization Energy in kJ/mol
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How can a hydrogen atom ever emit an X-ray photon?
From Scientific American, February 2014:
The Proton Radius Puzzle:
...we had to tune the laser so that it came in with exactly the right amount of energy. The atom would make the jump to the higher ...