what particle is emitted from the nucleus during a proton and neutron decay?

http://en.wikipedia.org/wiki/Beta_decay

http://en.wikipedia.org/wiki/Proton_decay

Hmmmm, the question sounds as if one believes proton decay actually exists.

http://en.wikipedia.org/wiki/Proton_decay

neutron decay: Now in the nucleus, neutrons do not decay, and again, your question baffles me. Free neutrons decay with "beta decay", the neutron emits an electron and an electron anti-neutrino, and leaving a proton.
http://en.wikipedia.org/wiki/Neutron

During proton decay, a particle called a positron is emitted from the nucleus. When a proton decays, it transforms into a neutron, and a positron (antielectron) is released. This process can occur in certain circumstances in high-energy physics.

To find this answer, you could start by conducting a basic search using keywords such as "particle emitted during proton decay." This will provide various sources, such as scientific articles or educational websites, that discuss the topic. When evaluating the information, be sure to rely on reputable sources to ensure accuracy and reliability.