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Physics Atomic and Nuclear Physics Mix MCQ (Single Correct)

The binding energy of an electron in the ground state of He is equal to 24.6 eV. The energy required to remove both the electrons is

A
49.2 eV
B
54.4 eV
C
79 eV
D
108.8 eV

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The correct answer is:
C

The energy needed to remove one electron from the ground state of

As the is now hydrogen like ionization energy

To remove both the electrons, energy needed

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