enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Lattice energy - Wikipedia

    en.wikipedia.org/wiki/Lattice_energy

    In chemistry, the lattice energy is the energy change upon formation of one mole of a crystalline ionic compound from its constituent ions, which are assumed to initially be in the gaseous state. It is a measure of the cohesive forces that bind ionic solids.

  3. Magnesium oxide - Wikipedia

    en.wikipedia.org/wiki/Magnesium_oxide

    Magnesium oxide (Mg O), or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium (see also oxide).It has an empirical formula of MgO and consists of a lattice of Mg 2+ ions and O 2− ions held together by ionic bonding.

  4. Properties of water - Wikipedia

    en.wikipedia.org/wiki/Properties_of_water

    2 O consists of [Fe 2 (H 2 O) 6] 2+ centers and one "lattice water". Water is typically a monodentate ligand, i.e., it forms only one bond with the central atom. [89] Some hydrogen-bonding contacts in FeSO 4. 7H 2 O. This metal aquo complex crystallizes with one molecule of "lattice" water, which interacts with the sulfate and with the [Fe(H 2 ...

  5. Ionic bonding - Wikipedia

    en.wikipedia.org/wiki/Ionic_bonding

    Most ionic compounds exist in the form of a crystal structure, in which the ions occupy the corners of the crystal. Such a structure is called a crystal lattice. Ionic compounds lose their crystal lattice structure and break up into ions when dissolved in water or any other polar solvent. This process is called solvation.

  6. Born–Landé equation - Wikipedia

    en.wikipedia.org/wiki/Born–Landé_equation

    The Born–Landé equation is a means of calculating the lattice energy of a crystalline ionic compound.In 1918 [1] Max Born and Alfred Landé proposed that the lattice energy could be derived from the electrostatic potential of the ionic lattice and a repulsive potential energy term.

  7. Crystal structure - Wikipedia

    en.wikipedia.org/wiki/Crystal_structure

    Of the 32 point groups that exist in three dimensions, most are assigned to only one lattice system, in which case the crystal system and lattice system both have the same name. However, five point groups are assigned to two lattice systems, rhombohedral and hexagonal, because both lattice systems exhibit threefold rotational symmetry.

  8. Born–Mayer equation - Wikipedia

    en.wikipedia.org/wiki/Born–Mayer_equation

    The Born–Mayer equation is an equation that is used to calculate the lattice energy of a crystalline ionic compound.It is a refinement of the Born–Landé equation by using an improved repulsion term.

  9. Ionic crystal - Wikipedia

    en.wikipedia.org/wiki/Ionic_crystal

    In chemistry, an ionic crystal is a crystalline form of an ionic compound. They are solids consisting of ions bound together by their electrostatic attraction into a regular lattice . Examples of such crystals are the alkali halides , including potassium fluoride (KF), potassium chloride (KCl), potassium bromide (KBr), potassium iodide (KI ...