Which particles in the atom's nucleus have a positive charge?

The particles in the atom's nucleus that possess a positive charge are protons. Protons are fundamental components of atomic structure, found alongside neutrons within the nucleus. Each proton carries a positive electrical charge, which contributes to the overall positive charge of the nucleus. This positive charge is crucial as it attracts negatively charged electrons that orbit around the nucleus, maintaining the atom's stability.

Neutrons, on the other hand, are also located in the nucleus but carry no charge, making them neutral. Electrons are negatively charged and exist outside the nucleus, while the term "atomic nuclei" refers to the entire structure that includes both protons and neutrons, rather than specifying which particles hold positive charges. Thus, it is clear that protons are the specific particles in the nucleus that exhibit a positive charge.