An alpha particle itself is not radioactive, but it is the result of a type of radioactive decay called (obviously) alpha decay. The alpha particle is actually a helium-4 nucleus, and it will eventually pick up a pair of electrons and become an atom of that inert or noble gas.
alpha particle
alpha particle
An alpha particle
An alpha particle has two protons.
An alpha particle consists of two protons and two neutrons.
alpha particle beta particle gamma rays
This is a alpha particle.
Gamma.
An alpha particle
When a radioactive nucleus emits an alpha particle, it decreases by two protons and two neutrons. This results in a new nucleus with a lower atomic number by 2 and lower mass number by 4. The emitted alpha particle is a helium nucleus (2 protons and 2 neutrons) and carries a positive charge.
Alpha particle.
The other product of the radioactive decay of 204 Pb to 200 Hg is an alpha particle (4 He nucleus). This decay process involves the emission of an alpha particle, leading to the formation of 200 Hg.