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  2. Copper(I) iodide - Wikipedia

    en.wikipedia.org/wiki/Copper(I)_iodide

    Copper(I) iodide is white, but samples often appear tan or even, when found in nature as rare mineral marshite, reddish brown, but such color is due to the presence of impurities. It is common for samples of iodide-containing compounds to become discolored due to the facile aerobic oxidation of the iodide anion to molecular iodine. [4] [5] [6]

  3. Hardnesses of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Hardnesses_of_the_elements...

    This page was last edited on 16 November 2024, at 12:16 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  4. Iodide - Wikipedia

    en.wikipedia.org/wiki/Iodide

    The low solubility of silver iodide and lead iodide reflects the covalent character of these metal iodides. A test for the presence of iodide ions is the formation of yellow precipitates of these compounds upon treatment of a solution of silver nitrate or lead(II) nitrate. [2] Aqueous solutions of iodide salts dissolve iodine better than pure ...

  5. Copper compounds - Wikipedia

    en.wikipedia.org/wiki/Copper_compounds

    Some copper proteins form oxo complexes, which also feature copper(III). [20] With tetrapeptides, purple-colored copper(III) complexes are stabilized by the deprotonated amide ligands. [21] Complexes of copper(III) are also found as intermediates in reactions of organocopper compounds. [22] For example, in the Kharasch–Sosnovsky reaction.

  6. Solubility table - Wikipedia

    en.wikipedia.org/wiki/Solubility_table

    Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75

  7. Isotopes of copper - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_copper

    Copper (29 Cu) has two stable isotopes, 63 Cu and 65 Cu, along with 28 radioisotopes. The most stable radioisotope is 67 Cu with a half-life of 61.83 hours. Most of the others have half-lives under a minute. Unstable copper isotopes with atomic masses below 63 tend to undergo β + decay, while isotopes with atomic masses above 65 tend to ...

  8. Iodine compounds - Wikipedia

    en.wikipedia.org/wiki/Iodine_compounds

    As such, iodide is the best leaving group among the halogens, to such an extent that many organoiodine compounds turn yellow when stored over time due to decomposition into elemental iodine; as such, they are commonly used in organic synthesis, because of the easy formation and cleavage of the C–I bond. [22]

  9. List of copper salts - Wikipedia

    en.wikipedia.org/wiki/List_of_copper_salts

    Copper is a chemical element with the symbol Cu (from Latin: cuprum) and the atomic number of 29. It is easily recognisable, due to its distinct red-orange color . Copper also has a range of different organic and inorganic salts , having varying oxidation states ranging from (0,I) to (III).