Radioactive dating is called

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An example is the decay (symbolized by an arrow) of the abundant isotope of In beta-minus decay, an energetic negative electron is emitted, producing a daughter nucleus of one higher atomic number and the same mass number.

An example is the decay of the uranium daughter product thorium-234 into protactinium-234: In the above reaction for beta decay, photons and are without rest mass or charge.

The process continues until a stable nuclide has been formed.positron, is the antiparticle of the electron; when brought together, two such particles will mutually annihilate each other.

Neutrons and protons are, of course, the basic building blocks of complex nuclei, having approximately unit mass on the atomic scale and having zero charge or unit positive charge, respectively. It is rapidly captured by nuclei in matter; otherwise, in free space it will undergo beta-minus decay to a proton, an electron, and an antineutrino with a half-life of 12.8 minutes.The law of conservation of angular momentum requires that the sum of angular momenta of the radiation and daughter nucleus is equal to the angular momentum (spin) of the parent.If the spins of initial and final states differ by more than one, dipole radiation is forbidden, and gamma emission must proceed more slowly by a higher multipole (quadrupole, octupole, etc.) gamma transition.The measured distribution of gamma-ray energies indicates the total energy release.Usually there is so much ordinary gamma radiation with radioactive decay that the inner bremsstrahlung is unobservable.

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