This depends on their energy.
An alpha particle that comes from nuclear decay is usually only able to travel a short distance, a few centimeters, through air.
Alpha particles as cosmic rays, however, are much more energetic, and can penetrate quite deeply, even through many meters of solid shielding. These can penetrate the atmosphere.
The electric charge of an alpha particle is positive. An alpha particle is a helium nucleus (which being a nucleus has a positive charge)
An alpha particle has a charge of 2, which means it is positively charged.
In alpha decay, the emitted particle has a charge of 2.
The nucleus of a helium atom is called an alpha particle. The electromagnetic waves emitted by a nucleus are called gamma rays.
An alpha particle is about four times heavier than a proton.
An alpha particle with energy of 4.0 MeV from Thorium-232 decay can travel less than 28 microns in body fluids.
About 10cm.
There are 2 neutron in an alpha particle.
An alpha particle could strike the phosphor screen on the same side of the foil as the alpha particle source if it undergoes a scattering event with a nucleus that causes it to change direction and travel back towards the same side. This scattering event can happen due to the strong Coulomb interaction between the positive charge of the alpha particle and the positive charge of the nucleus.
Alpha Particle
Yes, the alpha particle is nonfundamental.
a few centimeters deepending on the energy
Gamma, as it has the most energy by far.
Alpha particles (helium nuclei) are much larger and heavier than beta (electrons) and gamma (high-energy photons). This means they do far more damage to anything they hit. However, it also means can't travel very far and can be stopped by as little as a sheet of paper. Radioactive isotopes that emit only alpha radiation are not very dangerous, the only danger is breathing in or ingesting the isotope.
The electric charge of an alpha particle is positive. An alpha particle is a helium nucleus (which being a nucleus has a positive charge)
The mass and size of an alpha particle compare with the masa and size of beta particle in the sense that the alpha particle is significantly larger in both size and mass that the beta and gamma particles. This is why it is called the alpha particle.
An alpha particle is identical to the nucleus of Helium atom