What subatomic particle has a positive charge and is found in the nucleus of an atom?

The subatomic particle that has a positive charge and is located in the nucleus of an atom is the proton. Protons are fundamental components of atomic structure, where they contribute to the atomic number and thus define the element. Each proton carries a positive electric charge, which is essential for balancing the negative charge of electrons that orbit the nucleus. This balance of positive and negative charges is crucial for the stability of atoms.

In contrast, electrons are negatively charged and exist in the space around the nucleus rather than in the nucleus itself. Neutrons are neutral particles found in the nucleus alongside protons; they have no charge, which helps provide stability to the nucleus by mitigating the repulsive forces between positively charged protons. An ion, however, refers to an atom or molecule that has an unequal number of protons and electrons, resulting in a net charge but is not a specific type of subatomic particle.