The nuclear reaction is:
232Th--------------- 228Ra + α
An isotope of thorium is obtained.
This is an alpha decay.The half-life of uranium-238 is 4,468.10ex.9 years.
232U alpha decays to 228Th. Thorium-228 is the daughter product of the alpha decay of uranium-232.
Thorium isotopes are obtained.
You get this answer by performing the following: Mass # Mass # 4 Atomic # Parent symbol -> Atomic # Daughter symbol + 2 He 238 234 4 92 U -> 90 Th + 2 He Both sides must equal the same thing, so if you figure out what plus 4 = 238 and what plus 2 = 92, you can figure out the element is formed through decay. The resulting element in this case is Thorium.
226 88Ra
This isotope is radium-226.
alpha particles.
232Th---------alpha particle---------228Ra
229Th-------alpha particle-----------225Ra
An isotope of thorium is obtained.
Emitting an alpha particle 213Bi become 209Tl.
232U alpha decays to 228Th. Thorium-228 is the daughter product of the alpha decay of uranium-232.
This is an alpha decay.The half-life of uranium-238 is 4,468.10ex.9 years.
88Ra, Radium
The decay of thorium by alpha decay the resultant nuclide is the element radium. The specific nuclide of radium cannot be determined unless we know which specific nuclide of thorium underwent alpha decay.
238U radiates alpha particles and decays via 234Th and 234Pa into 234U, which has a halflife of 245,500 years. (Thorium-234, Protactinium-234, Uranium-234 respectively)