The Rotation Spectrum of the HCl Molecule Suggests a Photon

Multiple Choice

The rotation spectrum of the HCl molecule suggests a photon in the far infrared (around 5.0 *10-6 m) can excite the first rotational level.From this data, the moment of inertia of the HCl molecule (in kg . m2) is:

A) 2.8 * 10-48
B) 2.8 * 10-49
C) 2.8 * 10-47
D) 2.8 * 10-46
E) 2.8 * 10-45