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  2. Ionic bonding - Wikipedia

    en.wikipedia.org/wiki/Ionic_bonding

    Sodium and fluorine atoms undergoing a redox reaction to form sodium ions and fluoride ions. Sodium loses its outer electron to give it a stable electron configuration, and this electron enters the fluorine atom exothermically.

  3. Van Arkel–Ketelaar triangle - Wikipedia

    en.wikipedia.org/wiki/Van_Arkel–Ketelaar_triangle

    In 1941 Van Arkel recognised three extreme materials and associated bonding types. Using 36 main group elements, such as metals, metalloids and non-metals, he placed ionic, metallic and covalent bonds on the corners of an equilateral triangle, as well as suggested intermediate species.

  4. Ion - Wikipedia

    en.wikipedia.org/wiki/Ion

    Electron transfer between lithium (Li) and fluorine (F). Forming an ionic bond, Li and F become Li + and F − ions.. An ion (/ ˈ aɪ. ɒ n,-ən /) [1] is an atom or molecule with a net electrical charge.

  5. Common-ion effect - Wikipedia

    en.wikipedia.org/wiki/Common-ion_effect

    Barium iodate, Ba(IO 3) 2, has a solubility product K sp = [Ba 2+][IO 3 −] 2 = 1.57 x 10 −9.Its solubility in pure water is 7.32 x 10 −4 M. However in a solution that is 0.0200 M in barium nitrate, Ba(NO 3) 2, the increase in the common ion barium leads to a decrease in iodate ion concentration.

  6. Ligand-gated ion channel - Wikipedia

    en.wikipedia.org/wiki/Ligand-gated_ion_channel

    When ligands bind to the receptor, the ion channel portion of the receptor opens, allowing ions to pass across the cell membrane. Ligand-gated ion channel showing the binding of transmitter (Tr) and changing of membrane potential (Vm)

  7. Cherenkov radiation - Wikipedia

    en.wikipedia.org/wiki/Cherenkov_radiation

    Cherenkov radiation glowing in the core of the Advanced Test Reactor at Idaho National Laboratory. Cherenkov radiation (/ tʃ ə ˈ r ɛ ŋ k ɒ f / [1]) is electromagnetic radiation emitted when a charged particle (such as an electron) passes through a dielectric medium (such as distilled water) at a speed greater than the phase velocity (speed of propagation of a wavefront in a medium) of ...

  8. Ion-exchange resin - Wikipedia

    en.wikipedia.org/wiki/Ion-exchange_resin

    Ion-exchange resin beads. An ion-exchange resin or ion-exchange polymer is a resin or polymer that acts as a medium for ion exchange, that is also known as an ionex. [1] It is an insoluble matrix (or support structure) normally in the form of small (0.25–1.43 mm radius) microbeads, usually white or yellowish, fabricated from an organic polymer substrate.

  9. Ion exchange - Wikipedia

    en.wikipedia.org/wiki/Ion_exchange

    Ion-exchange resin beads Ion-exchange column used for protein purification. Ion exchange is a reversible interchange of one species of ion present in an insoluble solid with another of like charge present in a solution surrounding the solid.