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    Molar Mass of F (Fluorine)

    Molar Mass Calculator
    Chemical formula

    What is the molar mass of F?

    Answer

    M(F) =
    18.998 g/mol

    Atomic weights: IUPAC standard values (CIAAW, 2024).

    Elemental fluorine is made of F2 molecules: M(F2) = 37.996 g/mol = 0.037996 kg/mol.

    Contribution of each element
    Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
    Ffluorine118.99818.998 w = 100.00%

    Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)

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    Molar Mass of F (Fluorine): Step by Step. M(F) = 18.998 g/mol: the standard atomic weight of fluorine (IUPAC, CIAAW 2024). Molecule M(F2) = 37.996 g/mol.
    https://calculat.io/en/other/molar-mass/f/generated.jpgCopy

    Neighbouring elements of the periodic table

    FormulaM, g/mol
    C (carbon)12.011
    N (nitrogen)14.007
    O (oxygen)15.999
    F (fluorine)18.998
    Ne (neon)20.180
    Na (sodium)22.990
    Mg (magnesium)24.305
    Recalculate with different values ↑

    FAQ

    What is the molar mass of F?

    M(F) = 18.998 g/mol

    Why is the molar mass of fluorine 18.998 and not 38?

    18.998 g/mol is the mass of one mole of F atoms. Elemental fluorine is made of F₂ molecules: M(F₂) = 2 × 18.998 = 37.996 g/mol (38 in school problems); in SI units, 0.037996 kg/mol. In a problem about the gas, the molar mass of fluorine is usually M(F₂).

    How many grams are in 2 moles of F?

    m = n × M = 2 mol × 18.998 g/mol = 37.996 g.

    See Also