Answers
Explanation:
An alpha particle is a radioactive particle that is made up of two protons and two neutrons. It is a helium nucleus: that is a helium atom without electrons. Radioactive elements give out alpha particles when they go through a kind of radioactive decay, known as alpha decay.
The neutron is a subatomic particle, symbol n or n⁰ , with no net electric charge and a mass slightly greater than that of a proton. Protons and neutrons constitute the nuclei of atoms.
An alpha particle is a fast moving packet containing two protons and two neutrons (a helium nucleus). Alpha particles carry a charge of +2 and strongly interact with matter.
The velocity of alpha, α – particle ranges between 1.4 x 107 ms-1 to 2.1 x 107 ms-1 , depending upon the source emitting it. 5. Because of large mass, the penetrating power of α – particle is very small, it being 1/100 times that due to beta, β – rays and 1/10,000 times that due to γ – rays .