Nuclear Physics and RadioactivityHard
Question
For a doubly ionised Li-atom
Options
A.Angular momentum of an electron of an electron in 3rd orbit is 
B.Energy of electron in 2nd excited state is-13.6 eV
C.Speed of electron in 3rd orbit is 
, where c is speed of light
, where c is speed of light D.Kinetic energy of electron is 2nd excited state is half of the magnitude of the potential energy
(B) E = 
(C) K = 
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