Stable isotopes do not decay into other elements. In contrast, radioactive isotopes (e.g., 14C) are unstable and will decay into other elements. The less abundant stable isotope(s) of an element have ...

Radioactive isotopes emit beta or gamma radiation ... when correction is made for radioactive decay; it is 10 to 45 per cent in euthyroid subjects and 30 to 90 per cent in hyperthyroid persons.

a feature unique to this isotope. In excited states, a nuclei's protons or neutrons have higher than normal energy levels. Although energetically possible, the radioactive decay of this excited ...

An alpha particle consists of two protons and two neutrons and is often described as a helium nucleus. It is not the same as a helium atom as it does not contain any electrons but it is written ...

For example, carbon-14 decays to nitrogen-14 when it emits beta radiation ... Different radioactive isotopes have different half-lives. For example, the half-life of carbon-14 is 5,730 years ...

Isotopes of natural uranium decay by emitting mainly alpha particles. The emission of beta particles and gamma radiations are low. The table below shows the average energies per transformation emitted ...

giving off radiation and changing into a different isotope. The rate at which nuclei decay is constant. Half-life describes the interval of time during which half of the original atoms decay.