If an electron were to meet its corresponding antiparticle, called a positron, they would indeed annihilate each other. Annihilation is a process that occurs when a particle and its antiparticle come into contact, resulting in their mutual destruction and the production of energy.
During annihilation, the electron and the positron would collide and convert their combined masses into energy according to Einstein's famous equation, E=mc², where E represents energy, m represents mass, and c is the speed of light. The energy produced would be in the form of gamma rays or other high-energy particles.
This process is an example of particle-antiparticle annihilation, where the total charge, lepton number, and baryon number are conserved. In the case of the electron-positron annihilation, the total electric charge is zero, and after the annihilation, no particles with the same properties as the electron or the positron would remain.
It's worth noting that electron-positron annihilation is a well-studied phenomenon in particle physics and has been observed experimentally. It has important applications in areas such as medical imaging (e.g., PET scans) and high-energy physics research.