enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Iodine - Wikipedia

    en.wikipedia.org/wiki/Iodine

    This is an accepted version of this page This is the latest accepted revision, reviewed on 10 February 2025. This article is about the chemical element. For other uses, see Iodine (disambiguation). Chemical element with atomic number 53 (I) Iodine, 53 I Iodine Pronunciation / ˈ aɪ ə d aɪ n, - d ɪ n, - d iː n / (EYE -ə-dyne, -⁠din, -⁠deen) Appearance lustrous metallic gray solid ...

  3. Isotopes of iodine - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_iodine

    There are 40 known isotopes of iodine (53 I) from 108 I to 147 I; all undergo radioactive decay except 127 I, which is stable. Iodine is thus a monoisotopic element.. Its longest-lived radioactive isotope, 129 I, has a half-life of 16.14 million years, which is far too short for it to exist as a primordial nuclide.

  4. List of radioactive nuclides by half-life - Wikipedia

    en.wikipedia.org/wiki/List_of_radioactive...

    This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.

  5. Iodine-131 - Wikipedia

    en.wikipedia.org/wiki/Iodine-131

    Iodine-131 (131 I, I-131) is an important radioisotope of iodine discovered by Glenn Seaborg and John Livingood in 1938 at the University of California, Berkeley. [3] It has a radioactive decay half-life of about eight days. It is associated with nuclear energy, medical diagnostic and treatment procedures, and natural gas production.

  6. Radiocontrast agent - Wikipedia

    en.wikipedia.org/wiki/Radiocontrast_agent

    Iodinated contrast contains iodine.It is the main type of radiocontrast used for intravenous administration.Iodine has a particular advantage as a contrast agent for radiography because its innermost electron ("k-shell") binding energy is 33.2 keV, similar to the average energy of x-rays used in diagnostic radiography.

  7. Iodine compounds - Wikipedia

    en.wikipedia.org/wiki/Iodine_compounds

    Iodine compounds are compounds containing the element iodine. Iodine can form compounds using multiple oxidation states . Iodine is quite reactive, but it is much less reactive than the other halogens.

  8. Astatine - Wikipedia

    en.wikipedia.org/wiki/Astatine

    Less reactive than iodine, astatine is the least reactive of the halogens; [51] the chemical properties of tennessine, the next-heavier group 17 element, have not yet been investigated, however. [52] Astatine compounds have been synthesized in nano-scale amounts and studied as intensively as possible before their radioactive disintegration.

  9. Radioactive tracer - Wikipedia

    en.wikipedia.org/wiki/Radioactive_tracer

    A radioactive tracer, radiotracer, or radioactive label is a synthetic derivative of a natural compound in which one or more atoms have been replaced by a radionuclide (a radioactive atom). By virtue of its radioactive decay , it can be used to explore the mechanism of chemical reactions by tracing the path that the radioisotope follows from ...