How do you calculate the ionization energy of He+?

1 Answer
Feb 4, 2018

Do I have to? It has already been done by many a physical chemist and been given the name "Rydberg Constant".

#R_H = DeltaH_(IE)("H")#

#=# #"13.61 eV"#

#= DeltaH_(IE)("He"^(+))#

Why can I say this? How many electrons does #"He"^(+)# have?