the potential energy of an e- in 1st bohr orbit in He+ ion is?? Share with your friends Share 0 Gaurav Singh answered this Dear Student Regards 1 View Full Answer Aravind Subramanian answered this -3.4 electron volt ie eV Because, So, n of He+ is 2 i.e even though ion proton is 2 so, n=2 so, e=-13.6/4 -3.4 eV 1