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  2. Structural formula - Wikipedia

    en.wikipedia.org/wiki/Structural_formula

    CH 3 CH 2 OH . Parentheses are used to indicate multiple identical groups, indicating attachment to the nearest non-hydrogen atom on the left when appearing within a formula, or to the atom on the right when appearing at the start of a formula: (CH 3) 2 CHOH or CH(CH 3) 2 OH . In all cases, all atoms are shown, including hydrogen atoms.

  3. Lamprophyllite - Wikipedia

    en.wikipedia.org/wiki/Lamprophyllite

    The general crystal-chemical formula for lampropyllite-related minerals can be written as A2[(M1)(M2)2(M3)X2] [[5] L2(Si2O7)2O2], where the contents of the O and H sheets are given in square brackets in this order and A = Sr, Ba,K, Na; M1 = Na, Mn2+; M2 = Na, Mn2+, Fe2+, Ca; M3 = Ti, Mn2+, Mg, Fe3+, Fe2+; L = Ti, Fe3+; X = OH, O, F. [4]

  4. Chemical formula - Wikipedia

    en.wikipedia.org/wiki/Chemical_formula

    A chemical formula used for a series of compounds that differ from each other by a constant unit is called a general formula. It generates a homologous series of chemical formulae. For example, alcohols may be represented by the formula C n H 2n + 1 OH (n ≥ 1), giving the homologs methanol, ethanol, propanol for 1 ≤ n ≤ 3.

  5. Template:Chem2 - Wikipedia

    en.wikipedia.org/wiki/Template:Chem2

    No description. Template parameters [Edit template data] Parameter Description Type Status 1 1 no description Unknown optional auto auto no description Unknown optional link link no description Unknown optional Tracking Category:Pages using Chem2 with parameter issues (3) See also {{ Chem }} <chem>: WP:MATHCHEM — by TeX The above documentation is transcluded from Template:Chem2/doc. (edit ...

  6. Chemical equation - Wikipedia

    en.wikipedia.org/wiki/Chemical_equation

    A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and chemical formulas.The reactant entities are given on the left-hand side and the product entities are on the right-hand side with a plus sign between the entities in both the reactants and the products, and an arrow that points towards the products to show the direction of the reaction. [1]

  7. Whiteite - Wikipedia

    en.wikipedia.org/wiki/Whiteite

    Rittmannite, Mn 2+ Mn 2+ Fe 2+ 2 Al 2 (PO 4) 4 (OH) 2 ·8H 2 O; In the whiteite formulae, the symbols in brackets indicate the dominant atom in three distinct structural positions, designated X, M(1), and M(2), in that order; for instance, magnesium Mg is always the dominant atom in the M(2) position for all the whiteite minerals. [5]

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  9. Layered double hydroxides - Wikipedia

    en.wikipedia.org/wiki/Layered_double_hydroxides

    Size: 8.4 × 5.2 × 4.1 cm. Layered double hydroxides (LDH) are a class of ionic solids characterized by a layered structure with the generic layer sequence [AcB Z AcB] n, where c represents layers of metal cations, A and B are layers of hydroxide (OH −) anions, and Z are layers of other anions and neutral molecules (such as water). [1]