The question is unclear. First before what? More likely to occur? I am going to assume the latter...
Alpha decay is more likely to occur, when both alpha and beta are possible, because alpha decay removes more binding energy from the nuclide, and the tendency is to reduce energy as quickly as possible.
alpha particles.
alpha
The reason for all types of radioactive decay is the instability of the nucleus, some unstable nuclei become stable by alpha emission and some by beta emission.
alpha
hi my names princess and i think that the answer is GAMMA RAYS if I'm right can you tell me
alpha
alpha particles.
Gold never decays by alpha emission, it either decays by -beta, +beta, K capture, or gamma emission depending on isotope.Natural gold is isotopically pure gold-197, which is stable.
Thorium-234 don't emit alpha particles.
Alpha decay is the emission of an alpha particle, which as two protons and two neutrons, and is, therefore, essentially a helium ion moving very fast. Alpha particles are trapped in potential wells in the atoms from which they are eventually emitted. The emission happens when the particle goes through a quantum process called tunneling. In order for the alpha particle to have been trapped, the nucleus has to be big enough to trap it. The smallest nuclei big enough to do this are isotopes 106 through 110 of tellurium.
Alpha particles.
alpha ray.
alpha
An alpha and a beta emission
The reason for all types of radioactive decay is the instability of the nucleus, some unstable nuclei become stable by alpha emission and some by beta emission.
Alpha emission is a 4helium nucleus, which behaves like a particle. Beta emission is an electron, which behaves like a particle. Gamma emission is a photon, which behaves like a particle. Experiments can also be set up to show their wavelike properties (for alpha, beta, and gamma radiation).
Alpha emission means that an alpha particle (2 protons + 2 neutrons) are emitted, so the original nucleus has 2 protons and 2 neutrons more.