The reaction is:
Po-216----------------alpha particle-----------------Pb-212
Npn decays to Pan-4 and alpha. Only isotopes 234, 235, and 237 of neptunium can undergo alpha decay, the others decay by beta-, beta+, K capture, and/or gamma decay. So the only products of neptunium alpha decay can be protactinium isotopes 230, 231, or 233.
Lead-208 is formed by alpha decay (emission of alpha particles) from polonium-212.
Americium-241 has an alpha decay associated with gamma.
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The daughter isotope of Pu-239 is U-235.
All isotopes of polonium can undergo alpha decay, a small number of isotopes can also undergo beta decay, K capture decay, or gamma decay.
when an isotope is it does not undergo radioactive decay
After the alpha decay of polonium-212, the remaining isotope is lead-208. The alpha decay involves the loss of an alpha particle, which is a helium-4 nucleus consisting of two protons and two neutrons. This causes the atomic number to decrease by 2 and the mass number to decrease by 4, resulting in lead-208.
By alpha decay polonium-214 is transformed in lead-210. Po-214--------------alpha--------------Pb-210
Polonium 212 has 84 protons and 128 neutrons. An alpha particle is 2 protons and 2 neutrons, so the daughter nucleus will have 82 protons and 126 neutrons, making it lead 208.
The isotope radon-198 will alpha decay to polonium-194 as shown here: 86198Rn => 24He + 84194Po The radon is shown on the left, and the alpha particle, which is a helium nucleus, is shown of the right with the polonium.
The predominant method of decay for radon is alpha decay. The balanced reaction for the alpha decay of radon-222 is: ^222Rn -> ^218Po + α where ^222Rn is the radon nucleus, ^218Po is the polonium nucleus, and α is an alpha particle.
Each isotope has a specific radioactive decay.
Radon-222 undergoes alpha decay to produce polonium-218as a daughter.
Npn decays to Pan-4 and alpha. Only isotopes 234, 235, and 237 of neptunium can undergo alpha decay, the others decay by beta-, beta+, K capture, and/or gamma decay. So the only products of neptunium alpha decay can be protactinium isotopes 230, 231, or 233.
Polonium-218 undergoes alpha decay to form lead-214, which then undergoes beta decay to form bismuth-214.
It is alpha decay. In the process, an alpha particle(He2+) is released. So, it is called alpha decay.