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  2. Van Arkel–Ketelaar triangle - Wikipedia

    en.wikipedia.org/wiki/Van_Arkel–Ketelaar_triangle

    The compounds with equal electronegativity, such as Cl 2 are placed in the covalent corner, while the ionic corner has compounds with large electronegativity difference, such as NaCl (table salt). The bottom side (from metallic to covalent) contains compounds with varying degree of directionality in the bond.

  3. Metallic bonding - Wikipedia

    en.wikipedia.org/wiki/Metallic_bonding

    In a sense, metallic bonding is not a 'new' type of bonding at all. It describes the bonding only as present in a chunk of condensed matter: be it crystalline solid, liquid, or even glass. Metallic vapors, in contrast, are often atomic or at times contain molecules, such as Na 2, held together by a more conventional covalent bond. This is why ...

  4. Properties of metals, metalloids and nonmetals - Wikipedia

    en.wikipedia.org/wiki/Properties_of_metals...

    The chemical elements can be broadly divided into metals, metalloids, and nonmetals according to their shared physical and chemical properties.All elemental metals have a shiny appearance (at least when freshly polished); are good conductors of heat and electricity; form alloys with other metallic elements; and have at least one basic oxide.

  5. Complex metallic alloy - Wikipedia

    en.wikipedia.org/wiki/Complex_metallic_alloy

    Complex metallic alloys is an umbrella term for intermetallic compounds with a relatively large unit cell.There is no precise definition of how large the unit cell of a complex metallic alloy has to be, but the broadest definition includes Zintl phases, skutterudites, and Heusler compounds on the most simple end, and quasicrystals on the more complex end.

  6. Periodic trends - Wikipedia

    en.wikipedia.org/wiki/Periodic_trends

    8 Metallic and non-metallic properties. 9 Nucleophilicity and Electrophilicity. ... it is the measure of the combining capacity of an element to form chemical compounds.

  7. Metallurgy - Wikipedia

    en.wikipedia.org/wiki/Metallurgy

    Metallurgy derives from the Ancient Greek μεταλλουργός, metallourgós, "worker in metal", from μέταλλον, métallon, "mine, metal" + ἔργον, érgon, "work" The word was originally an alchemist's term for the extraction of metals from minerals, the ending -urgy signifying a process, especially manufacturing: it was discussed in this sense in the 1797 Encyclopædia ...

  8. Metal - Wikipedia

    en.wikipedia.org/wiki/Metal

    [1] [2] Many elements and compounds become metallic under high pressures, for example, iodine gradually becomes a metal at a pressure of between 40 and 170 thousand times atmospheric pressure. Sodium becomes a nonmetal at pressure of just under two million times atmospheric pressure, and at even higher pressures it is expected to become a metal ...

  9. Alloy - Wikipedia

    en.wikipedia.org/wiki/Alloy

    In some cases, an alloy may reduce the overall cost of the material while preserving important properties. In other cases, the mixture imparts synergistic properties such as corrosion resistance or mechanical strength. In an alloy, the atoms are joined by metallic bonding rather than by covalent bonds typically found in chemical compounds. [1]

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