Concepts Of Physics MCQ Edition [Volume 2]PhysicsBohr's Model and Physics of the Atom

Determine the ionization potential for a Li ⁺⁺ ion.

Options

A40.8 V
B122.4 V
C54.4 V
D13.6 V

Correct answer

B. 122.4 V

Step-by-step solution

For a hydrogen-like ion, the ionization energy is given by E = 13.6 Z^2 eV . For a Li ⁺⁺ ion, the atomic number is Z = 3 . Substituting Z = 3 in the formula: E = 13.6 (3)^2 eV = 13.6 9 eV = 122.4 eV . The corresponding ionization potential is 122.4 V .

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