Final answer:
Phosphorus-32 undergoes beta decay, emitting a beta particle and resulting in a new atom with a higher atomic number.
Step-by-step explanation:
Phosphorus-32 undergoes beta decay. In beta decay, a nucleus emits beta particles. The daughter nucleus will have a higher atomic number than the original nucleus. In the case of phosphorus-32, it decays by the emission of a beta particle, resulting in a new atom with a higher atomic number.