What is the equation for the beta decay of iodine-131?
What is the equation for the beta decay of iodine-131?
Iodine-131 is a beta emitter commonly used in nuclear medicine. The equation for its decay is: Note that both the charge and the mass are balanced and that iodine-131 emits both a gamma ray and a beta particle….
| Radiation emitted | Change in Atomic number | Change in Mass number |
|---|---|---|
| gamma ray | 0 | 0 |
When iodine-131 undergoes beta decay what other particle is produced?
An example of negatron decay occurs in the iodine-131 nucleus that decays into xenon-131 nucleus with the emission of a beta-minus particle. In positron decay, a proton within the parent isotope that has large decay energy and too many protons is converted to a neutron, a positron, and a neutrino (Fig.
What is the decay equation for beta?
In beta plus decay, a proton decays into a neutron, a positron, and a neutrino: p Æ n + e+ +n.
How does i131 decay?
Iodine-131 has a half-life of 8.06 days and decays by beta-particle emission to a stable 131Xe. The principal mean beta energy (90%) is 192 keV. Several gamma rays are also emitted, and the predominant photon is 364 keV (82% abundance) (HVL in water of 6.4 cm).
What is the use of I-131?
I-131 is used in medicine to diagnose and treat cancers of the thyroid gland. Where does it come from? I-131 is produced commercially for medical and industrial uses through nuclear fission. It also is a byproduct of nuclear fission processes in nuclear reactors and weapons testing.
What will be the atomic mass of the daughter element when I atomic mass 131 and atomic number 53 undergo beta decay?
13153I→13154Xe+β , where β is a beta-particle (an electron). Notice that the number of protons has increased by 1 (53 → 54), but the atomic mass number has remained unchanged. There are now 54 protons and 131−54=77 neutrons, which means the N/Z ratio has decreased and the stability of the isotope has increased.
Is I-131 more likely to undergo beta decay or positron decay?
Iodine-131 is more likely to undergo beta decay than positron decay. Without going into too much detail, an element’s radioactivity corresponds to the ratio between protons and neutrons it has in its nucleus.
Does iodine-131 emit alpha particles?
The most widely used iodine radioisotope, iodine-131, emits radiation in the form of medium energy gamma rays and beta particles, which disrupts molecules in cells and deposits energy in tissues, causing damage.
When I-131 undergoes radioactive decay which element is formed?
xenon-131
As an example, iodine-131 is a radioisotope with a half-life of 8 days. It decays by beta particle emission into xenon-131.
How is I-131 produced?
Iodine-131 is an artificially produced fission by-product resulting from nuclear weapons, above-ground nuclear testing, and nuclear reactor operations. Iodine-131 is found in the gaseous and liquid waste streams of nuclear power plants, but is not released to the environment during normal reactor operations.
