What is the product of the beta-minus decay of I 131?
I-131 undergoes beta-minus decay and emits a principle primary gamma photon of 364 kiloelecton volts (keV) (81% abundance) with an 8-day physical half-life (Table 6-1). The 364-keV photons are not optimal for gamma cameras.
What element does I 131 decay into write a decay equation?
Iodine-131 (131I, I-131) is an important radioisotope of iodine discovered by Glenn Seaborg and John Livingood in 1938 at the University of California, Berkeley. It has a radioactive decay half-life of about eight days….Iodine-131.
| General | |
|---|---|
| Symbol | 131I |
| Names | iodine-131, I-131, radioiodine |
| Protons (Z) | 53 |
| Neutrons (N) | 78 |
How does iodine-131 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 decay equation for radium-226?
We also know that the atomic number (Z) of radium-226 from the periodic table is 88 which means that an atom of radium-226 has 88 protons in its nucleus. Radon-222 has an atomic number (Z) of 86 so an atom of radon-222 contains 86 protons in its nucleus….Alpha Decay.
| radium-226 | → | radon-222 |
|---|---|---|
| 226 Ra 88 | → | 222 Rn 86 |
What is beta decay example?
The decay of technetium-99, which has too many neutrons to be stable, is an example of beta decay. A neutron in the nucleus converts to a proton and a beta particle. The nucleus ejects the beta particle and some gamma radiation. The new atom retains the same mass number, but the number of protons increases to 44.
What happens to the xenon-131 isotope when beta decay occurs?
This isotope decays to Xenon by beta decay in which a neutron is converted to a proton and an electron. The electron that is produced in this process is the primary mechanism by which I-131 damages residual thyroid tissue and thyroid cancer.
What is iodine-131 Halflife?
characteristics of iodine …exceptionally useful radioactive isotope is iodine-131, which has a half-life of eight days.
Why is iodine-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 is the decay equation of radon-222?
Radon-222 has an atomic number (Z) of 86 so an atom of radon-222 contains 86 protons in its nucleus. We now have a description of the particle lost as a nucleus that contains 4 nucleons, two of the nucleons are protons….Alpha Decay.
| 4 | He | α |
|---|---|---|
| 2 |