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Chromium-51 is a synthetic radioactive isotope of chromium having a half-life of 27.7 days and decaying by electron capture with emission of gamma rays (0.32 MeV); it is used to label red blood cells for measurement of mass or volume, survival time, and sequestration studies, for the diagnosis of gastrointestinal bleeding, and to label platelets to study their survival.
Naturally occurring chromium is composed of four stable isotopes; 50 Cr, 52 Cr, 53 Cr and 54 Cr, with 52 Cr being the most abundant (83.789% natural abundance). 50 Cr is observationally stable , as it is theoretically capable of decaying to 50 Ti via double electron capture with a half-life of no less than 1.3 × 10 18 years.
The complex is a tetramer of binuclear Cr 2 (OH) 3 (OAc) 3.The subunits are linked by acetate and hydroxide ligands.The oxidation state of chromium is III, which explains the stability of the complex since octahedral d 3 ions give kinetically robust complexes.
For substitutional solid solutions, the Hume-Rothery rules are as follows: The atomic radius of the solute and solvent atoms must differ by no more than 15%: [1] % = % %. The crystal structures of solute and solvent must be similar.
Raj Matharu, 31, of Northridge, faces one count of possession with intent to distribute methamphetamine, according to the U.S. Attorney's Office.
A hacker gained access to an online secure document-sharing file between attorneys involved in a civil lawsuit brought by a close friend of former Rep. Matt Gaetz, according to sources familiar ...
Sodium dichromate is the inorganic compound with the formula Na 2 Cr 2 O 7.However, the salt is usually handled as its dihydrate Na 2 Cr 2 O 7 ·2H 2 O.Virtually all chromium ore is processed via conversion to sodium dichromate and virtually all compounds and materials based on chromium are prepared from this salt. [1]
WASHINGTON (Reuters) -U.S. President Joe Biden's administration has awarded over $100 billion in grants created by its signature climate law, the Inflation Reduction Act, Biden senior advisor for ...