The decay shown in the equation (^{238}{94}\text{Pu} \rightarrow ^{4}{2}\text{He} + X) is alpha decay. In this process, plutonium-238 emits an alpha particle, which is a helium nucleus ((^{4}{2}\text{He})), resulting in a new element, (X). The atomic number of the resulting element (X) will be (94 - 2 = 92) and its mass number will be (238 - 4 = 234), making it (^{234}{92}\text{U}) (uranium-234).
426 + 238 = 664
A very unlikely type of decay.Plutonium is found as isotopes with atomic weights in the range 238 to 244. Your equation seems to involve plutonium with another 39-78 neutrons! Making it an extremely unlikely (if not impossible) isotope.A very unlikely type of decay.Plutonium is found as isotopes with atomic weights in the range 238 to 244. Your equation seems to involve plutonium with another 39-78 neutrons! Making it an extremely unlikely (if not impossible) isotope.A very unlikely type of decay.Plutonium is found as isotopes with atomic weights in the range 238 to 244. Your equation seems to involve plutonium with another 39-78 neutrons! Making it an extremely unlikely (if not impossible) isotope.A very unlikely type of decay.Plutonium is found as isotopes with atomic weights in the range 238 to 244. Your equation seems to involve plutonium with another 39-78 neutrons! Making it an extremely unlikely (if not impossible) isotope.
1113
194 + 44 = 238
122+58+58 is equal to 238.
Alpha decay
This is an alpha decay.
This is an example of alpha decay.
Alpha
Uranium 238 is transformed in thorium 234 by alpha decay.
This is an alpha decay.The half-life of uranium-238 is 4,468.10ex.9 years.
What is missing is the type of decay that occurs during the transformation. For example, uranium-238 decays into thorium-234 through alpha decay, so the missing component would be the emission of an alpha particle in the balanced equation.
Uranium 238 goes through a decay series until it becomes lead. An intermediate product of this decay series is Thorium 234. Uranium 238 decays into an atom of Thorium 234 and an atom of Helium 4. The Helium 4, being a gas, frequently escapes into the atmosphere. Since the decay of Uranium 238 into Thorium 234 and Helium 4 gives off heat and mass, nature does not normally reverse the process.
Alpha
The decay equation for uranium-238 (U-238) decaying into an alpha particle (helium-4) can be represented as follows: (^{238}{92}\text{U} \rightarrow ^{4}{2}\text{He} + ^{234}_{90}\text{Th}). This equation shows the radioactive decay process of U-238 into an alpha particle and thorium-234.
All radioactive isotopes decay because they are unstable; uranium-238 decay to thorium-234 by beta (-) decay. The half life of 238U is very great: 4,468.109 years.
426 + 238 = 664