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  2. Electronegativities of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Electronegativities_of_the...

    Electronegativity is not a uniquely defined property and may depend on the definition. The suggested values are all taken from WebElements as a consistent set. Many of the highly radioactive elements have values that must be predictions or extrapolations, but are unfortunately not marked as such.

  3. Reactivity series - Wikipedia

    en.wikipedia.org/wiki/Reactivity_series

    The image shows a periodic table extract with the electronegativity values of metals. [12] Wulfsberg [13] distinguishes: very electropositive metals with electronegativity values below 1.4 electropositive metals with values between 1.4 and 1.9; and electronegative metals with values between 1.9 and 2.54.

  4. Aluminium compounds - Wikipedia

    en.wikipedia.org/wiki/Aluminium_compounds

    For example, aluminium monoxide, AlO, has been detected in the gas phase after explosion [19] and in stellar absorption spectra. [20] More thoroughly investigated are compounds of the formula R 4 Al 2 which contain an Al–Al bond and where R is a large organic ligand .

  5. Metal ions in aqueous solution - Wikipedia

    en.wikipedia.org/wiki/Metal_ions_in_aqueous_solution

    A metal ion in aqueous solution or aqua ion is a cation, dissolved in water, of chemical formula [M(H 2 O) n] z+.The solvation number, n, determined by a variety of experimental methods is 4 for Li + and Be 2+ and 6 for most elements in periods 3 and 4 of the periodic table.

  6. Metallic bonding - Wikipedia

    en.wikipedia.org/wiki/Metallic_bonding

    Metals are insoluble in water or organic solvents, unless they undergo a reaction with them. Typically, this is an oxidation reaction that robs the metal atoms of their itinerant electrons, destroying the metallic bonding. However metals are often readily soluble in each other while retaining the metallic character of their bonding.

  7. Aluminium - Wikipedia

    en.wikipedia.org/wiki/Aluminium

    Aluminium hydroxychlorides are used in purifying water, in the paper industry, and as antiperspirants. [166] Sodium aluminate is used in treating water and as an accelerator of solidification of cement. [166] Many aluminium compounds have niche applications, for example: Aluminium acetate in solution is used as an astringent. [167]

  8. Driving into Manhattan? That’ll cost you, as new congestion ...

    www.aol.com/driving-manhattan-ll-cost-congestion...

    New York’s new toll for drivers entering the center of Manhattan debuted Sunday, meaning many people will pay $9 to access the busiest part of the Big Apple during peak hours.

  9. Aluminium nitride - Wikipedia

    en.wikipedia.org/wiki/Aluminium_nitride

    The origin of spontaneous polarization is the strong ionic character of chemical bonds in wurtzite AlN due to the large difference in electronegativity between aluminium and nitrogen atoms. Furthermore, the non-centrosymmetric wurtzite crystal structure gives rise to a net polarization along the c-axis.