Preferred Label : ionization energy;
Detailed label : ionization energy, Ei;
IUPAC definition : Minimum energy required to eject an electron out of a neutral atom or molecule in
its ground state. The adiabatic ionization energy refers to the formation of the molecular
ion in its ground vibrational state and the vertical ionization energy applies to
the transition to the molecular ion without change in geometry. This quantity was
formerly called ionization potential. The second ionization energy of an atom is the
energy required to eject the second electron from the atom (energy for the process
).;
Origin ID : I03199;
See also
Minimum energy required to eject an electron out of a neutral atom or molecule in
its ground state. The adiabatic ionization energy refers to the formation of the molecular
ion in its ground vibrational state and the vertical ionization energy applies to
the transition to the molecular ion without change in geometry. This quantity was
formerly called ionization potential. The second ionization energy of an atom is the
energy required to eject the second electron from the atom (energy for the process
).
