What does uranium-238 eventually decay into?
The half-life of uranium-238 is 4.5 billion years. It decays into radium-226, which in turn decays into radon-222. Radon-222 becomes polonium-210, which finally decays into a stable nuclide, lead.
When uranium-238 decays to thorium-234 what type of decay must take place?
Uranium-238 undergoes alpha decay to become thorium-234. (The numbers following the chemical names refer to the number of protons plus neutrons.) In this reaction, uranium-238 loses two protons and two neutrons to become the element thorium-234.
Does uranium-238 alpha decay?
Uranium-238 decays by alpha emission with a half-life of (4.4683±0.0048)×109 yr (Jaffey et al., 1971) to 234Th, which in turn decays (half-life=24.1 d) by beta emission to 234Pa, which decays (half-life=6.7 h) by beta emission to 234U, which decays (half-life=245,250±490 yr; Cheng et al., 2000) by alpha emission to 230 …
What does c14 decay into?
Carbon-14 is a rare version of carbon with eight neutrons. It is radioactive and decays over time. When carbon-14 decays, a neutron turns into a proton and it loses an electron to become nitrogen-14.
What does thorium decay into?
Thorium- 228 is a decay product of radium-228, and thorium-228 decays into radium-224. The radiation from the decay of thorium and its decay products is in the form of alpha and beta particles and gamma radiation. Alpha particles can travel only short distances and cannot penetrate human skin.
What type of decay is 238 U?
Uranium-238 decays by alpha emission into thorium-234, which itself decays by beta emission to protactinium-234, which decays by beta emission to uranium-234, and so on.
Why is uranium 238 not used for nuclear power?
U- 238 is a fissionable isotope, meaning that it can undergo nuclear fission, but the neutrons fired at it would need much more energy in order for fission to take place. because of the large amount of energy needed, U- 238 will not normally undergo fission in a nuclear reactor.
What is the cost of 1 kg Uranium?
Indian authorities yesterday arrested a man discovered in possession of close to 1 kilogram of uranium worth approximately $7 million, the Times of India reported (see GSN, June 3).
How long does it take for carbon 14 to completely decay?
The time it takes for 14C to radioactively decay is described by its half-life. C has a half-life of 5,730 years. In other words, after 5,730 years, only half of the original amount of 14C remains in a sample of organic material. After an additional 5,730 years–or 11,460 years total–only a quarter of the 14C remains.
What happens to the nucleus of uranium 238?
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. Dave.
What kind of decay does thorium go through?
This thorium, in turn, transforms into protactinium-234, and then undergoes beta-negative decay to produce uranium-234. Big stuff like Uranium usually undergoes alpha particle decay. An alpha particle is a helium nucleus with 2 protons and 2 neutrons. So that means Uranium is going to lose two protons and 2 neutrons.
Is it possible to transmute uranium 238 to plutonium 239?
However, it is fissionable by fast neutrons, and is fertile, meaning it can be transmuted to fissile plutonium-239. 238 U cannot support a chain reaction because inelastic scattering reduces neutron energy below the range where fast fission of one or more next-generation nuclei is probable.
How many protons and neutrons does uranium have?
uranium-238, U-238: Protons: 92: Neutrons: 146: Nuclide data; Natural abundance: 99.2745%: Half-life: 4.468 billion years: Parent isotopes: 242 Pu 238 Pa (β −) Decay products: 234 Th: Isotope mass: 238.05078826 u: Spin: 0: Decay modes; Decay mode: Decay energy : alpha decay: 4.267: Isotopes of uranium Complete table of nuclides