Molecular Rotation: Estimate the Rotational Energy (In EV) for a Diatomic

Multiple Choice

Molecular rotation: Estimate the rotational energy (in eV) for a diatomic hydrogen molecule in the l = 2 quantum state. (The equilibrium separation for the H₂ molecule is 0.074 nm.) (1 eV = 1.60 × 10^-19 J, h = 6.626 × 10^-34 J ∙ s, ħ = 1.055 × 10^-34 J ∙ s, m_h ≈ m_proton = 1.67 × 10^-27 kg)

A) 0.011 eV
B) 0.026 eV
C) 0.032 eV
D) 0.046 eV
E) 0.055 eV