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- The disintegration of the nucleus of an atom
- to produce a beta particle, or high-speed
- electron, and an antineutrino.
- During beta decay, a proton in the nucleus
- changes into a neutron, thereby increasing
- the atomic number by one while the mass
- number stays the same. The mass lost in the
- change is converted into kinetic (movement)
- energy of the beta particle. Beta decay is
- caused by the weak nuclear force, one of the
- fundamental forces of nature operating inside
- the nucleus.
-