Question

assume that the electron in Li2+ ion is in third orbit.calculate 1.the radius of the orbit,2.the total energy of electron (hint:Li2+ ion also had atomic spectra similar to hydrogen atom.while applying relevant equations use 2=3)

Answer 1

you should apply bohr's radius formula i.e.,52.9n square/z and the answer is 158.7pm
energy is2.14×10power-18