Final answer:
An alpha particle is a positively charged particle made up of two protons and two neutrons, having a total charge of +2.
Step-by-step explanation:
The particle you are asking about is an alpha particle. An alpha particle is a positively charged particle that consists of two protons and two neutrons. These components come together to form a nucleus that has a +2 charge. Protons are subatomic particles with a positive electric charge found in the nucleus of an atom, each having a charge of +1. Neutrons, on the other hand, have no electric charge and provide mass and stability to the nucleus. The positive charge of the alpha particle makes it a key figure in the study of radioactive decay, where it can be emitted as a form of radiation.