# Homework Help: Statistical thermo (diatomic molecule w/harmonic oscillator)

1. Feb 23, 2010

### jaejoon89

2. Jan 29, 2017

### TeethWhitener

A diatomic molecule has only one vibrational mode. The $C_{ij}$ matrix becomes a single number, $k$, the spring constant for the molecule. The harmonic frequency is given by $\omega = \sqrt{\frac{k}{m}}$.