Which process occurs contain nuclei come together to form one bigger nucleus

Answer 1

The process in which two or more atomic nuclei come together to form a single, larger nucleus is called nuclear fusion. This process releases a significant amount of energy, which is why it powers the Sun and other stars. In fusion, light nuclei, such as isotopes of hydrogen (like deuterium and tritium), combine under extreme pressure and temperature to form heavier nuclei, such as helium, along with the release of energy and other particles.