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 decays into neptunium-239 through alpha decay. It has a half-life of 7,370 years.
The final product of the decay chain series of neptunium is thallium-205; the first product of decay is protactinium-233.
Neptunium 237 is not a natural occurring isotope; all the isotopes of neptunium are artificially obtained. The new isotope formed by decay of Np 237 is protactinium 233.
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.
The density of alpha neptunium is 20,45 g/cm3.
S-34 is stable. It will not decay.
The daughter of neptunium 237 is protactinium 233, after alpha disintegration.
There is no equation. Calcium-42 is stable and does not decay. Calcium is also much to light for alpha decay, which requires elements heavier than nickel, so no isotope of calcium undergoes alpha decay.
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.