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  2. Nitrogen trifluoride - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_trifluoride

    Nitrogen trifluoride is the inorganic compound with the formula (NF 3).It is a colorless, non-flammable, toxic gas with a slightly musty odor.In contrast with ammonia, it is nonbasic.

  3. Formal charge - Wikipedia

    en.wikipedia.org/wiki/Formal_charge

    Formal charges in ozone and the nitrate anion. In chemistry, a formal charge (F.C. or q*), in the covalent view of chemical bonding, is the hypothetical charge assigned to an atom in a molecule, assuming that electrons in all chemical bonds are shared equally between atoms, regardless of relative electronegativity.

  4. Structural formula - Wikipedia

    en.wikipedia.org/wiki/Structural_formula

    Skeletal structural formula of Vitamin B 12.Many organic molecules are too complicated to be specified by a molecular formula.. The structural formula of a chemical compound is a graphic representation of the molecular structure (determined by structural chemistry methods), showing how the atoms are connected to one another. [1]

  5. Charge number - Wikipedia

    en.wikipedia.org/wiki/Charge_number

    Using the chart provided, if ammonium with a plus 1 charge is combined with an acetate ion with a negative 1 charge, the charges will be cancelled out, shown in the figure below. NH 4 + + C 2 H 3 O 2 − NC 2 H 7 O 2 {\displaystyle {\ce {NH4+ + C2H3O2^- -> NC2H7O2}}}

  6. NF3 - Wikipedia

    en.wikipedia.org/wiki/NF3

    NF3 may refer to: Nitrogen trifluoride (NF 3), a colorless gas used as an etchant; Zukertort Opening, an opening move in chess (1. Nf3) This page was last edited on 3 ...

  7. Zukertort Opening - Wikipedia

    en.wikipedia.org/wiki/Zukertort_Opening

    Nf3. Sometimes the name "Réti Opening" is used for the opening move 1.Nf3, [1] although most sources define the Réti more narrowly as the sequence 1.Nf3 d5 2.c4. [2] A flank opening, it is the third most popular of the twenty legal opening moves White has, behind only 1.e4 and 1.d4. [3] [4] [5]

  8. Field effect (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Field_effect_(chemistry)

    Field effect on a carbonyl arising from the formal charge on N in a quaternary ammonium salt. A field effect is the polarization of a molecule through space. The effect is a result of an electric field produced by charge localization in a molecule. [1]

  9. Lewis acids and bases - Wikipedia

    en.wikipedia.org/wiki/Lewis_acids_and_bases

    The model assigned E and C parameters to many Lewis acids and bases. Each acid is characterized by an E A and a C A. Each base is likewise characterized by its own E B and C B. The E and C parameters refer, respectively, to the electrostatic and covalent contributions to the strength of the bonds that the acid and base will form. The equation is