Compare the energies of electron in the third orbit of He+ ion with the electron in the second orbit of Li 2+ ion.

Compare the energies of electron in the third orbit of He+ ion with th

1.	Compare the energies of electron in the third orbit of He+ ion with the electron in the second orbit of Li 2+ ion.
Answer» tion:The POTENTIAL energy of an electron in the nth orbit is given by:P.E.=− N2 27.2 z 2 eVAs it is lithium-ion ‘z’=3 and as it is 2ND orbit, n=2.Putting z=3,n=2,P.E.=− 2 2 27.2×3 2 P.E=−61.2 eV