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.
The alpha decay of americium-241 produce neptunium-237.
For example americium-241 decay to neptunium-237 and americium-243 decay to neptunium-239.
That depends on the type of decay, alpha and beta decay change the atom into a different element but gamma decay does not.
The reaction is:Po-216----------------alpha particle-----------------Pb-212
The isotope lead-204 is obtained.
The alpha disintegration of neptunium-237 lead to the isotope protactinium-233.
When neptunium atoms fall apart, they can form various isotopes of other elements. Neptunium decay series typically produce isotopes of uranium, thorium, and protactinium as the neptunium atom undergoes radioactive decay.
Americium can change into neptunium through a process called alpha decay. During alpha decay, an alpha particle (helium nucleus) is emitted from the nucleus of the americium atom, resulting in the transformation of the americium atom into a neptunium atom.
Americium-241 undergoes alpha decay to become Neptunium-237. During alpha decay, an alpha particle (two protons and two neutrons) is emitted, resulting in the conversion of Americium-241 to Neptunium-237.
The new atom formed from the decay of Neptunium-237 is Protactinium-233. After emitting an alpha particle (Helium-4 nucleus), a beta particle (electron or positron), and a gamma ray (photon), Neptunium-237 transmutes into Protactinium-233.
When bismuth-212 undergoes alpha decay, it becomes thallium-208.
When uranium undergoes alpha decay, it emits an alpha particle (which is equivalent to a helium nucleus, ( ^4_2He )), resulting in a decrease of its atomic number by 2 and its mass number by 4. For example, if uranium-238 (( ^{238}{92}U )) undergoes alpha decay, it transforms into thorium-234 (( ^{234}{90}Th )). Thus, the notation for the thorium isotope produced is ( ^{234}_{90}Th ).
Americium-243 might undergo alpha decay to become neptunium-239, and here is that equation: 95243Am => 93239Np + 24He++ The americium-243 has undergone transmutation to become neptunium-239, and the alpha particle, which is a helium-4 nucleus, can be seen on the tail end of the equation.
During alpha emission, a radioisotope emits an alpha particle, which is composed of two protons and two neutrons. This reduces the atomic number of the parent isotope by 2 and the atomic mass by 4. The emission of an alpha particle transforms the parent isotope into a new element.
The density of alpha neptunium is 20,45 g/cm3.
The daughter of neptunium 237 is protactinium 233, after alpha disintegration.
Lead-209 will be left over after the isotope bismuth-213 undergoes alpha decay, as the emission of an alpha particle causes the atomic number of the element to decrease by 2. Bismuth-213 has an atomic number of 83, so after the emission of an alpha particle (which has an atomic number of 2), the resulting element will have an atomic number of 81, which corresponds to lead.