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  2. Isotopes of copper - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_copper

    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 ...

  3. List of copper ores - Wikipedia

    en.wikipedia.org/wiki/List_of_copper_ores

    Following is a list of minerals that serve as copper ores in the copper mining process: [1] Image Name Formula % Copper when pure Chalcopyrite: CuFeS 2: 34.5 Chalcocite:

  4. 2b2t - Wikipedia

    en.wikipedia.org/wiki/2b2t

    2b2t.org (server) [5] 2b2t (2builders2tools) is a Minecraft server founded in December 2010. 2b2t has essentially no rules and players are not permanently banned, known within Minecraft as an " anarchy server". [2] As a result, players commonly engage in the destruction of other players' and groups creations, colloquially called "griefing", as ...

  5. 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.

  6. Psilocybe cubensis - Wikipedia

    en.wikipedia.org/wiki/Psilocybe_cubensis

    Psilocybe cubensis, commonly known as the magic mushroom, shroom, golden halo, golden teacher, cube, or gold cap, is a species of psilocybin mushroom of moderate potency whose principal active compounds are psilocybin and psilocin. It belongs to the fungus family Hymenogastraceae and was previously known as Stropharia cubensis.

  7. Copper - Wikipedia

    en.wikipedia.org/wiki/Copper

    Copper. face-centered cubic (fcc) (cF4) Copper is a chemical element; it has symbol Cu (from Latin cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity ...

  8. Copper cycle - Wikipedia

    en.wikipedia.org/wiki/Copper_cycle

    Copper mining contributes significantly to copper emissions into fresh waters. Copper is also introduced into freshwater during metal corrosion , degradation, and abrasion of copper. Scrap copper metal is commonly recycled, but at the end of its manufacturing life cycle, it is discarded to landfills, which can leach significant copper into ...

  9. Rare-earth element - Wikipedia

    en.wikipedia.org/wiki/Rare-earth_element

    The rare-earth elements (REE), also called the rare-earth metals or rare earths, and sometimes the lanthanides or lanthanoids (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), [ 1 ] are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals.