Molecular Rotation: a Diatomic Molecule Has a Moment of Inertia

question 1

Multiple Choice

Molecular rotation: A diatomic molecule has a moment of inertia of 7.73 × 10^-45 kg∙ m². What is its rotational energy in the quantum state characterized by l = 2? (h = 6.626 × 10^-34 J ∙ s, ħ = 1.055 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J)

• A) 22.7 µeV
• B) 27.0 µeV
• C) 587 µeV
• D) 72.2 µeV
• E) 87.1 µeV

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