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Iodine-131 (131I, I-131) is a radioactive isotope of iodine with a half-life of about eight days. It is used in medical, nuclear, and industrial applications, and can be produced by neutron irradiation of tellurium or fission of uranium.
Learn about the 37 known isotopes of iodine, from 108 I to 144 I, and their decay modes, half-lives, and applications. Find out how iodine is a monoisotopic and mononuclidic element, and how radioactive iodine is used in medicine and nuclear accidents.
The decay scheme of a radioactive substance is a graphical presentation of all the transitions occurring in a decay, and of their relationships. Examples are shown below. It is useful to think of the decay scheme as placed in a coordinate system, where the vertical axis is energy, increasing from bottom to top, and the horizontal axis is the proton number, increasing from left to right.
Iodine is a halogen element with symbol I and atomic number 53. It has various oxidation states, forms compounds with many metals, and is essential for life. Learn about its discovery, isotopes, and applications in medicine and industry.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
The accident was a partial nuclear meltdown of the Unit 2 reactor of the Three Mile Island Nuclear Generating Station in Pennsylvania, U.S., in 1979. It is the worst accident in U.S. commercial nuclear power plant history and led to new regulations and anti-nuclear concerns.
Radioactive iodine-131 is a common fission product; it was a major component of the radioactivity released from the Chernobyl disaster, leading to nine fatal cases of pediatric thyroid cancer and hypothyroidism. On the other hand, radioactive iodine is used in the diagnosis and treatment of many diseases of the thyroid precisely because of the ...
A comprehensive list of fission products produced by nuclear fission of uranium and plutonium, with their half-lives, yields, and decay modes. Learn about the chemical and radiological properties of these elements and their applications and hazards.