A radioactive isotope's nucleus is unstable and spontaneously decays, giving off radiation and changing into a different isotope. The rate at which nuclei decay is constant. Half-life describes ...

The questions in this quiz are suitable for GCSE physics students studying stable nuclei ... equations. If you struggled with the quiz, don't panic - we've got you! You can revise radioactive ...

and which is also responsible for holding atoms together), the weak nuclear force (which acts inside atomic nuclei, and is responsible for a certain kind of radioactive decay), and the strong ...

Some natural elements are unstable. Therefore, their nuclei disintegrate or decay, thus releasing energy in the form of radiation. This physical phenomenon is called radioactivity and the radioactive ...

The technique of neutron activation analysis is based on the measurement of radiation released by the decay of radioactive nuclei formed by neutron irradiation of the material. The most suitable ...

However, when particles transform or decay into other particles, for example as occurs when an atomic nucleus undergoes radioactive decay, CP violation causes a crack in this mirror-like symmetry.

Example nuclear reactions include radioactive decay, fission, the break-up of a nucleus, and fusion, the merging of nuclei.