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  2. Lewis structure - Wikipedia

    en.wikipedia.org/wiki/Lewis_structure

    Lewis structure of a water molecule. Lewis structures – also called Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDs) – are diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule.

  3. Aluminium oxide (data page) - Wikipedia

    en.wikipedia.org/wiki/Aluminium_oxide_(data_page)

    Structure and properties ... Gas properties Std enthalpy change of formation, ... Aluminium oxide (data page) 1 language ...

  4. Aluminium oxide - Wikipedia

    en.wikipedia.org/wiki/Aluminium_oxide

    Aluminium oxide (or aluminium(III) oxide) is a chemical compound of aluminium and oxygen with the chemical formula Al 2 O 3. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium oxide. It is commonly called alumina and may also be called aloxide, aloxite, or alundum in various forms and ...

  5. Surface properties of transition metal oxides - Wikipedia

    en.wikipedia.org/wiki/Surface_properties_of...

    The cationic metal centres act as Lewis acid sites while the anionic oxygen centres act as Lewis bases. Surface hydroxyl groups can serve as Brønsted acid or base sites as they can give up or accept a proton. [14] The surface of most metal oxides will be, to some extent, hydroxylated under normal conditions when water vapor is present. [15]

  6. Linnett double-quartet theory - Wikipedia

    en.wikipedia.org/wiki/Linnett_Double-Quartet_Theory

    While Lewis’ model could explain the structures of many molecules, Lewis himself could not rationalise why electrons, negatively-charged particles which should repel, were able to form electron pairs in molecules or even why electrons can form a bond between atoms. [4] Lewis’ theory has been seminal in the understanding of the chemical bond.

  7. Aluminium oxides - Wikipedia

    en.wikipedia.org/wiki/Aluminium_oxides

    Aluminium oxides or aluminum oxides are a group of inorganic compounds with formulas including aluminium (Al) and oxygen (O). Aluminium(I) oxide ( Al 2 O ) Aluminium(II) oxide ( AlO ) (aluminium monoxide)

  8. Aluminium iodide - Wikipedia

    en.wikipedia.org/wiki/Aluminium_iodide

    The structure of monomeric and dimeric forms have been characterized in the gas phase. [6] The monomer, AlI 3, is trigonal planar with a bond length of 2.448(6) Å, and the bridged dimer, Al 2 I 6, at 430 K is a similar to Al 2 Cl 6 and Al 2 Br 6 with Al−I bond lengths of 2.456(6) Å (terminal) and 2.670(8) Å (bridging).

  9. Aluminium nitride - Wikipedia

    en.wikipedia.org/wiki/Aluminium_nitride

    Furthermore, the non-centrosymmetric wurtzite crystal structure gives rise to a net polarization along the c-axis. Compared with other III-nitride materials, AlN has a larger spontaneous polarization due to the higher nonideality of its crystal structure (P sp: AlN 0.081 C/m 2 > InN 0.032 C/m 2 > GaN 0.029 C/m 2). [13]