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.
Uranium 238 is transformed in thorium 234 by alpha decay.
Thorium-234 does not change into Uranium-234. Thorium-234 undergoes radioactive decay to form Protactinium-234, which then decays to form Uranium-234. This process happens over multiple steps through alpha and beta decay mechanisms.
92238U decays to 90234Th by alpha decay. Since an alpha particle is a helium nucleus, 24He2+, having two protons and two neutrons, the reaction entails the loss of two neutrons.
The first radioactive element formed when uranium-238 decays is thorium-234. Uranium-238 undergoes alpha decay to form thorium-234.
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 ).
daughter element
These are all phenomenons in nuclear physics.
This decay occurs due to the instability of the uranium-238 nucleus, which undergoes alpha decay to achieve a more stable configuration as thorium-234. During alpha decay, a helium nucleus (two protons and two neutrons) is emitted from the uranium-238 nucleus, leading to the transformation into thorium-234.
Uranium 238 is transformed in thorium 234 by alpha decay.
The possible products of the alpha decay of uranium-238 are thorium-234 and helium-4. During alpha decay, the uranium nucleus releases an alpha particle (helium nucleus) and transforms into thorium-234.
Thorium-234 does not change into Uranium-234. Thorium-234 undergoes radioactive decay to form Protactinium-234, which then decays to form Uranium-234. This process happens over multiple steps through alpha and beta decay mechanisms.
92238U decays to 90234Th by alpha decay. Since an alpha particle is a helium nucleus, 24He2+, having two protons and two neutrons, the reaction entails the loss of two neutrons.
The first radioactive element formed when uranium-238 decays is thorium-234. Uranium-238 undergoes alpha decay to form thorium-234.
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 ).
234 is the mass of that particular Uranium isotope. Exactly 234,040 952 088 ± 0,000 001 960 u.a.
This is alpha decay.If you notice carefully, uranium has 238 atomic wt. and on decaying becomes thorium with atomic wt. of 234. hence it lost atomic wt. of 4. He, which is released in alpha decay, has atomic no. of 4. Hence, if uranium decayed into Helium and Thorium, it will undergo Alpha Decay
The decay product of uranium 238 by alpha disintegration (not beta or gamma) is thorium 234.