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.
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.
The final product of the decay chain series of neptunium is thallium-205; the first product of decay is protactinium-233.
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.
The equation for the alpha decay of americium-243 is 95Am^243 -> 93Np^239 + 2He^4. In this process, an alpha particle (helium nucleus) is emitted, leading to the conversion of americium-243 into neptunium-239.
The density of alpha neptunium is 20,45 g/cm3.
If Sulfur-34 undergoes alpha decay, it will become silicon-30. This is because in alpha decay, the parent nucleus loses an alpha particle (which is a helium nucleus composed of 2 protons and 2 neutrons), resulting in a new nucleus with an atomic number reduced by 2 and a mass number reduced by 4.
The daughter of neptunium 237 is protactinium 233, after alpha disintegration.
The alpha decay of calcium-42 results in the emission of an alpha particle (helium nucleus) from the nucleus. The equation for this decay is: ( \require{cancel} \require{mhchem} \ce{^{42}{20}Ca -> ^{4}{2}He + ^{38}_{18}Ar} )
Radon-222 undergoes alpha decay to produce polonium-218as a daughter.
The atomic mass of neptunium-237 is 237,048 173 4(20).The density of alpha neptunium is 20,45 g/cm3.
The answer is D. All of these change.