Compare and contrast the location and relative mass of protons and electrons within an atom.

Protons are located in the dense central nucleus of an atom and have a relatively large mass. Electrons, in contrast, orbit the nucleus and are significantly lighter, having a negligible mass compared to protons.
Explnation:

Protons are heavy, positively charged particles located in the nucleus. Electrons are much lighter, negatively charged particles that occupy the electron cloud surrounding the nucleus. This difference in mass and location is crucial for understanding atomic structure and behavior.