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Compared to the half life and decay mode of the nuclide 90sr the nuclide 226ra has?
Compared to the half-life and decay mode of the nuclide (^{90}\text{Sr}), the nuclide (^{226}\text{Ra}) has a significantly longer half-life and a different decay mode. (^{90}\text{Sr}) has a half-life of about 28.8 years and primarily decays via beta decay to (^{90}\text{Y}). In contrast, (^{226}\text{Ra}) has a half-life of about 1,600 years and decays primarily through alpha decay to (^{222}\text{Rn}). This means that (^{226}\text{Ra}) is more stable and persists longer in the environment compared to (^{90}\text{Sr}).
What is the equation for beta decay of carbon-14?
14C --> 14N + e-
What is the correct order of nuclear decay mode for the changes from U-238 to U-234?
The correct order of nuclear decay mode for the changes from U-238 to U-234 is alpha decay followed by beta decay. In alpha decay, the nucleus emits an alpha particle, reducing its atomic number by 2 and mass number by 4, resulting in Th-234. This is followed by beta decay, where a neutron is converted into a proton, producing U-234.
How would you write a nuclear equation for the most likely mode of decay for the unstable nuclide Kr-74?
Krypton-74 will most likely undergo beta decay, and the type of beta decay an observer will encounter will be beta plus decay. A proton in the nucleus will undergo a change and become a neutron, and a positron (e+) and an antineutrino (ve) will emerge from the reaction. The krypton-74 atom will transmute into a bromine-74 atom. The equation will look something like this: 3674Kr => 3574Br + e+ + ve
What do you know about an isotope?
Isotopes have same atomic number. They have different mass numbers. Their physical properties are different.
Compared to the half life and decay mode of the nuclide 90sr the nuclide 226ra has?
Compared to the half-life and decay mode of the nuclide (^{90}\text{Sr}), the nuclide (^{226}\text{Ra}) has a significantly longer half-life and a different decay mode. (^{90}\text{Sr}) has a half-life of about 28.8 years and primarily decays via beta decay to (^{90}\text{Y}). In contrast, (^{226}\text{Ra}) has a half-life of about 1,600 years and decays primarily through alpha decay to (^{222}\text{Rn}). This means that (^{226}\text{Ra}) is more stable and persists longer in the environment compared to (^{90}\text{Sr}).
What is the decay mode in iodine-131?
Iodine-131 decays through beta decay by emitting a beta particle and a gamma ray. This process transforms a neutron in the iodine-131 nucleus into a proton, resulting in the formation of xenon-131.
What two radioisotopes have the same decay mode?
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How to predict the mode of decay in radioactive substances?
To predict the mode of decay in radioactive substances, scientists use the concept of nuclear stability and the ratio of protons to neutrons in the nucleus. By analyzing these factors, they can determine whether a radioactive substance will decay through alpha, beta, or gamma decay.
Why there's not a formula for beta decay?
There certainly is a formula for beta decay. You just need to know the parent nuclide and the beta mode, beta- or beta+. See the related question below which answers this quite well.
What is the equation for beta decay of carbon-14?
14C --> 14N + e-
What is the correct order of nuclear decay mode for the changes from U-238 to U-234?
The correct order of nuclear decay mode for the changes from U-238 to U-234 is alpha decay followed by beta decay. In alpha decay, the nucleus emits an alpha particle, reducing its atomic number by 2 and mass number by 4, resulting in Th-234. This is followed by beta decay, where a neutron is converted into a proton, producing U-234.
How would you write a nuclear equation for the most likely mode of decay for the unstable nuclide Kr-74?
Krypton-74 will most likely undergo beta decay, and the type of beta decay an observer will encounter will be beta plus decay. A proton in the nucleus will undergo a change and become a neutron, and a positron (e+) and an antineutrino (ve) will emerge from the reaction. The krypton-74 atom will transmute into a bromine-74 atom. The equation will look something like this: 3674Kr => 3574Br + e+ + ve
What element results if four protons and four neutrons are ejected from a plutonium nucleus?
The most common isotope of plutonium is Pu-239. Ejecting four protons and four neutrons would reduce the atomic number from 94 to 90 and the mass number from 239 to 231. Element #90 is Thorium, so the answer would be Thorium-231. However, that is not an actual decay mode for Pu-239. Pu-239 decays by emitting an alpha particle (two protons and two neutrons) to Uranium-235. U-235 can then further decay by emitting another alpha particle to form Th-231.
What does uranium become when it decays?
If we use uranium-238 as our starter isotope, what happens is that a nuclear decay event happens (in this case an alpha decay) and the U-238 transforms into a daughter isotope thorium (Th-234). The half-life of this transition is 4.5 billion years. Thorium-234 then undergoes a decay. And the process continues until a stable isotope is created as the last daughter of a decay chain. Note that there will be different half lives for the transition events, and the modes of decay will vary depending on what daughter is now the parent in the next decay event. Use the link below to see all the steps. The chart will show the whole chain including the half-life of isotope undergoing decay, the decay mode, and the daughter. Follow along using the keys and the process will reveal itself.
How can you say that radioactive decay is random unless you know that the nuclides are identical in the first place?
Radioactive decay is a random event. But we can assess it by statistical analysis of a large number of decay events across time for a given radionuclide. Standard stastical analysis ideas apply. The way we know that it is the radionuclide we specify is that we refine the sample chemically. Then we look at the decay mode. If it is a situation where there is particle emission, we can identify the particle and the energy it comes out at. If its electromagnetic, we can specify an energy associated with the photon. The mode of decay and the energy cast off are the ways we can insure our "count" of the decay events specifically targets the radionuclide we are investigating. That and the applied chemistry we specified to clean up the sample. We're good at this radioactive decay thing. We can count even a very few decay events, and do so accurately across time (though more is better). And because we've done our homework as regards type of decay and energies, we know what it is that is decaying, and how long it is taking to decay. We can arrive at a half-life for a given radionuclide. A link can be found below.
What do you know about an isotope?
Isotopes have same atomic number. They have different mass numbers. Their physical properties are different.
