What is the stable end product of U 238?
206Pb
The stable end products of these naturally occurring radioactive decay series are 206Pb (for 238U), 207Pb (for 235U), and 208Pb (for 232Th).
What happens when uranium-238 decays?
A nucleus of uranium 238 decays by alpha emission to form a daughter nucleus, thorium 234. This thorium in turn transforms into protactinium 234, and then undergoes beta-negative decay to produce uranium 234. Any such decay chain is only stopped by the formation of a stable nucleus.
What is the daughter product of uranium-238?
Lead-206
RADIOMETRIC TIME SCALE
| Parent Isotope | Stable Daughter Product | Currently Accepted Half-Life Values |
|---|---|---|
| Uranium-238 | Lead-206 | 4.5 billion years |
| Uranium-235 | Lead-207 | 704 million years |
| Thorium-232 | Lead-208 | 14.0 billion years |
| Rubidium-87 | Strontium-87 | 48.8 billion years |
What are the two products of the decay of U 235?
Decay of uranium-235 into thorium-231 and an alpha particle. Larger, more massive nuclei like uranium-235 become more stable by emitting an alpha particle, which is a helium nucleus composed of two protons and two neutrons. This process is known as alpha decay.
What element will be formed if thorium 230 undergoes alpha decay?
radium-
A. The nuclide thorium-230 undergoes alpha emission to give radium-226 .
Why is U 238 more stable than U 235?
U-238 is the most abundant uranium followed by U-U- 235 and 234. The difference between the three isotopes is the number of neutrons present in the nucleus. U-238 has 4 more neutrons than U-234 and three more neutrons than U-235. U-238 is more stable thus being more abundant naturally.
When U 238 decays by emitting an alpha particle What is the atomic number of the resulting nucleus What is the resulting atomic mass?
4
Explanation: Uranium-238 produces thorium-234 by alpha decay. An α-particle is a helium nucleus. It contains 2 protons and 2 neutrons, for a mass number of 4.
What is the product of the radioactive decay of plutonium 238?
uranium-234
Plutonium-238 naturally decays to uranium-234 and then further along the radium series to lead-206.
What will decay to produce protactinium-234 and a beta particle?
The equation shows that thorium-234 becomes protactinium-234 and loses a beta particle and energy. The protactinium-234 produced in the reaction is also radioactive, so it will decay as well. An alpha particle, which is emitted during alpha decay, consists of two protons and two neutrons.
When thorium-234 undergoes beta decay What other product is formed?
In this beta decay, a thorium-234 nucleus has one more proton than the original nucleus. In this beta decay, a thorium-234 nucleus has become a protactinium-234 nucleus. Protactinium-234 is also a beta emitter and produces uranium-234.
What will decay to produce protactinium 234 and a beta particle?
How is uranium-235 produced?
U235 when concentrated (or “enriched”) is fissionable in light-water reactors (the most common reactor design in the USA). During fission, the nucleus of the atom splits apart producing both heat and extra neutrons.
How do you determine alpha decay?
1 Answer. Alpha decay is the decomposition of a nucleus of an element into a new nucleus of a different element and an alpha particle. Alpha particle is composed of 2 neutrons and 2 protons. Generally an alpha particle is referred to a helium nucleus since it has 2 neutrons and 2 protons but no electrons.
What is the nuclear equation for alpha decay?
Nuclear reaction energy, such as released in α decay, can be found using the equation E = (Δm)c 2. We must first find Δm, the difference in mass between the parent nucleus and the products of the decay.
What is the alpha decay process?
Alpha decay is a form of radioactive decay in which an alpha particle is emitted by a heavy element in an attempt to become more stable. The other types of radioactive decay are beta decay and gamma decay. Particle detectors can be used to detect the emission of alpha particles, and the process…
Does alpha decay produce energy?
Yes. Alpha decay is the principal energy source for the Radioisotope Thermoelectric Generators, or RTGs provide electrical power for spacecraft by converting the heat generated by the decay of plutonium-238 (Pu-238) fuel into electricity using devices called thermocouples.