Binding energy of an element’s outermost electron is the amount of energy it takes to produce a free electron from that in the element’s ground state. Is the binding energy therefore the last entry in the list of wavenumbers and is that the same, converted to eV, as given by the “IonizationEnergies” property of hydrogen?
Why is there only one energy supplied in response to “IonizationEnergies” when, it would appear that EntityClass["AtomicLevel",{Hydrogen",1}] should have the requisite data?
Is there a more straightforward way to convert from “kJ/mol” to “eV”?
[1]: Wolfram Cloud Document