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Forum Question BankThe ionization energy of H atom is 13.6 eV. The…

MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryAtomic StructureIntro

The ionization energy of H atom is 13.6 eV. The ionization energy of Li²⁺ ion will be

0.54.4 eV

1.40.8 eV

2.27.2 eV

3.122.4 eV

Explanation

IE ∝ Z². For Li²⁺, Z = 3. IE(Li²⁺) = 13.6 × 3² = 13.6 × 9 = 122.4 eV

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