Dear Dr.,

What formula is this?
En = -Z^2RH/n^2
I saw you use it in one of your explanations.
I know its been a few yrs since u last posted it.
Pls help thanks!
Yours sincerely,
Johan

1 answer

Energy of an electron in an orbit. If Z is 1 it is H, if Z is other than 1 it is for another element, usually He or Li. Rh is the Rydberg constant for H.