Assertion: hydrogen atom's energy | /r/HasProperty | supplied
Facets:
Source sentences:
text: Thus energy must be supplied to pull the electron away from the nucleus.
text: Since the ground state energy of the hydrogen atom is -13.6 eV (negative since the electron is in a bound state so that energy must be supplied to free the electron), the incident photon must have an energy of E = 10.1 eV + 13.6 eV = 23.7 eV, where