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  2. Group 11 element - Wikipedia

    en.wikipedia.org/wiki/Group_11_element

    Group 11, by modern IUPAC numbering, [1] is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), gold (Au), and roentgenium (Rg), although no chemical experiments have yet been carried out to confirm that roentgenium behaves like the heavier homologue to gold.

  3. Copper - Wikipedia

    en.wikipedia.org/wiki/Copper

    Copper is a chemical element. It has the symbol Cu (from Latin cuprum), and the atomic number 29. ... Aside from sulfides, another family of ores are oxides ...

  4. List of copper alloys - Wikipedia

    en.wikipedia.org/wiki/List_of_copper_alloys

    Classification of copper and its alloys Family Principal alloying element UNS numbers Copper alloys, brass: Zinc (Zn) C1xxxx–C4xxxx,C66400–C69800 Phosphor bronze: Tin (Sn) C5xxxx Aluminium bronzes: Aluminium (Al) C60600–C64200 Silicon bronzes: Silicon (Si) C64700–C66100 Cupronickel, nickel silvers: Nickel (Ni) C7xxxx

  5. Group (periodic table) - Wikipedia

    en.wikipedia.org/wiki/Group_(periodic_table)

    In the periodic table of the elements, each column is a group. In chemistry, a group (also known as a family) [1] is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the 14 f-block columns, between groups 2 and 3, are not numbered.

  6. 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.

  7. Coinage metals - Wikipedia

    en.wikipedia.org/wiki/Coinage_metals

    The coinage metals comprise those metallic chemical elements and alloys which have been used to mint coins. Historically, most coinage metals are from the three nonradioactive members of group 11 of the periodic table: copper, silver and gold. Copper is usually augmented with tin or other metals to form bronze.

  8. List of chemical elements - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_elements

    A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...

  9. Pnictogen - Wikipedia

    en.wikipedia.org/wiki/Pnictogen

    These are in the form of RE a M b Pn c, where M is a carbon group or boron group element and Pn is any pnictogen except nitrogen. These compounds are between ionic and covalent compounds and thus have unusual bonding properties. [4] These elements are also noted for their stability in compounds due to their tendency to form covalent double ...