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## Homework Statement

What is the calculated binding energy of the electron in the ground state of (a) deuterium, (b) [tex]He^{+}[/tex] and (c) [tex]Be^{+++}[/tex]?

## Homework Equations

For the hydrogen atom, [tex]E_{n}[/tex] = - [tex]E_{o}[/tex] / [tex]n^{2}[/tex]

[tex]E_{o}[/tex] = [tex]me^{4}[/tex] / 2[tex]hbar[/tex]^2(4[tex]\pi[/tex]Eo)^2

## The Attempt at a Solution

Not sure how to do this. Can I apply the above equations which are meant for a hydrogen atom to these other atoms? I dont believe so but I'm unsure how to change them.

I know how to correct the Rydberg constant for the different atoms, but it doesnt even appear in any of these formulas so I don't think that would change anything.

Not sure where to start. Help?