Explain the primary difference in electrical charge between a proton and an electron within an atom.

A proton carries a positive electrical charge, while an electron carries a negative electrical charge. These charges are equal in magnitude but opposite in sign.
Protons and electrons are fundamental particles with opposite charges. Protons are found in the nucleus and have a +1 charge, while electrons orbit the nucleus and have a -1 charge. This difference in charge is crucial for the stability and interactions of atoms.