The spacing of the atoms in the H₂ molecule is 7.4 x 10^-¹¹ m. What is the energy of the L = 1 rotational level? A)9.0 x 10^-² eV B)7.0 x 10^-² eV C)4.5 x 10^-² eV D)3.0 x 10^-² eV E)1.5 x 10^-² eV

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Quizplus · Accepted Answer

The energy of a rotational level is given by E = (L(L+1)ħ²)/(2I), where I is the moment of inertia I = μr², μ is the reduced mass of H₂, and r is the bond length. For L = 1, the energy is approximately 1.5 x 10⁻² eV.

The Spacing of the Atoms in the H2 Molecule Is

The Spacing of the Atoms in the H₂ Molecule Is