Alpha particle is the same as a helium-4 nucleus, i.e., two protons and two neutrons bound together. If an atom emits an alpha particle, it will have two protons less, and two neutrons less. Over time, there may be additional decay, which may further change the number of protons and neutrons.
An unstable isotope with extra energy in the nucleus is a radioactive isotope. This extra energy causes the nucleus to undergo radioactive decay, emitting particles or gamma rays in order to become more stable. This process can involve the release of alpha particles, beta particles, or gamma radiation.
Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation in the form of alpha particles, beta particles, or gamma rays. This emission helps the nucleus become more stable by transforming it into a different element. The rate at which radioactive decay occurs is measured by the half-life of the unstable nucleus, which is the time it takes for half of the radioactive atoms in a sample to decay.
An unstable nucleus (radioactive isotope) may emit: alpha particles, beta particles, gamma radiations, electrons, positrons, X-rays, and neutrons, depending on which nucleus is doing the emitting.
Exhibiting or caused by radioactivity.Radioactivity: the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay.Examples are radioactive isotopes [an unstable nucleus that undergoes radioactive decay], radioactive dating [the process by which the approximate age of an object is determined based on the amount of certain radioactive nuclides present], and radioactive decay [the spontaneous disintegration of a nucleus into a slightly lighter and more stable nucleus, accompanied by emission of particles, electromagnetic radiation, or both.]
Any radioactive element gives off subatomic particles, and these particles carry considerable energy. That is the definition of radioactivity. Examples of radioactive elements include uranium, plutonium, polonium, radium, and many more.
The process of a radioactive decay is atomic nucleus of an unstable atom loses energy by emitting ionizing particles
Particles or electromagnetic radiation are emitted.
An unstable isotope with extra energy in the nucleus is a radioactive isotope. This extra energy causes the nucleus to undergo radioactive decay, emitting particles or gamma rays in order to become more stable. This process can involve the release of alpha particles, beta particles, or gamma radiation.
Lead-208, which is not radioactive
An unstable nucleus can undergo radioactive decay to become more stable. This can involve emitting radiation in the form of alpha particles, beta particles, or gamma rays. The decay process results in a transformation of the nucleus into a different element or isotope.
The process by which the nucleus of an unstable atom loses energy by emitting radiation, including alpha particles, beta particles, gamma rays, and conversion electrons.
It is the nucleus of the atom that undergoes change during radioactive decay.
A characteristic of a radioactive nucleus is that it undergoes spontaneous decay, emitting radiation in the form of alpha particles, beta particles, or gamma rays in order to achieve a more stable configuration.
Radioactive atoms undergo spontaneous decay, emitting particles or energy in the form of radiation. This process transforms the atoms into different elements or isotopes, creating new elements that may also be radioactive. This decay continues until the atom reaches a stable state.
Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation in the form of alpha particles, beta particles, or gamma rays. This emission helps the nucleus become more stable by transforming it into a different element. The rate at which radioactive decay occurs is measured by the half-life of the unstable nucleus, which is the time it takes for half of the radioactive atoms in a sample to decay.
An unstable nucleus (radioactive isotope) may emit: alpha particles, beta particles, gamma radiations, electrons, positrons, X-rays, and neutrons, depending on which nucleus is doing the emitting.
The stability of an atom depends on a balance between the numbers of protons and neutrons in its nucleus and also on the total size of its nucleus; atoms with sufficiently large nuclei are inherently unstable. Please see the link.