See your post later. b is done the same way a is done.
Z = 2^2 for He^+
Z = 3^2 for Li^2+
Calculate the energy (in kJ/mol) required to remove the electron in the ground state for each of the following one-electron species using the Bohr model.
(a) He+
kJ/mol
(b) Li2+
kJ/mol
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