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. [1] 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.
NOTE: This trick does not work with Half-Life 1.0.1.0 or higher. Command line parameters To enter these codes you must edit the Half-Life icon on your START menu.
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