Thread: Excited state

Given a ion Hydrogen-like that it's electron is in an excited state n.
The ionization energy of the ion from the excited state n is 7.65eV.
Radiating the electron in light frequency of 6.65x10^14sec-1 transfers it to excited state n+1.

I need to calculate what is the excited state n, and which is ion: He+ or Li2+ ?

If we know that radiating the electron in light frequency of 6.65x10^14sec-1 transfers it to excited state n+1.


I need to use the Bohr model.
i found that n+1=4.90eV

i asked about n but n is not 7.63eV?
and i am not sure if i need to use this formula: En=-13.6Z*Z/n*n
and last thing how can i know which is ion: He+ or Li2+?

thanks.