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Physics
Atoms
As per Bohr's model the energy (in eV) required to remove electron from ground state of Li++ (doubly ionised lithium atom) is
1.51
13.6
40.8
122.4
$ E = 13.6\times \frac{Z^2}{n^2} = 13.6\times 3^2 = 122.4 eV$