Molecular Rotation: a Diatomic Molecule Has a Moment of Inertia

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