A certain molecule has 2.00 eV of rotational energy in the l = 1 state.In the l = 4 state,what would its rotational energy be?
A) 8.00 eV
B) 16.0 eV
C) 20.0 eV
D) 30.0 eV
E) 32.0 eV

Question

Quizplus · Accepted Answer

The rotational energy of a molecule is proportional to l(l+1). For l = 1, the energy is 2.00 eV. For l = 4, the energy is proportional to 4(4+1) = 20, which is 10 times the energy at l = 1. Therefore, the energy at l = 4 is 2.00 eV * 10 = 20.0 eV.

A Certain Molecule Has 2