Atomic StructureHard
Question
The ionization energy of He-atom in the ground state may be
Options
A.13.6 eV
B.54.4 eV
C.108.8 eV
D.27.0 eV
Solution
Second I.E. of He is 13.6 × 22 = 54.4 eV. Hence, I.E. of He-atom must be greater than 13.6 eV but less than 54.4 eV.
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