Feedback form
Hi! What do you think?

Drag it here or paste with Ctrl+V

    You can also email us on infocalculat.io

    Molar Mass of I (Iodine)

    Molar Mass Calculator
    Chemical formula

    What is the molar mass of I?

    Answer

    M(I) =
    126.90 g/mol

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

    Elemental iodine is made of I2 molecules: M(I2) = 253.80 g/mol = 0.25380 kg/mol.

    Contribution of each element
    Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
    Iiodine1126.90126.90 w = 100.00%

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

    See Also

    Share This Calculation
    Print
    https://calculat.io/en/other/molar-mass/iCopy
    <a href="https://calculat.io/en/other/molar-mass/i">Molar Mass of I (Iodine): Step by Step - Calculatio</a>Copy
    Facebook
    Twitter
    Telegram
    WhatsApp
    Viber
    Email
    Molar Mass of I (Iodine): Step by Step. M(I) = 126.90 g/mol: the standard atomic weight of iodine (IUPAC, CIAAW 2024). Molecule M(I2) = 253.80 g/mol.
    https://calculat.io/en/other/molar-mass/i/generated.jpgCopy

    Neighbouring elements of the periodic table

    FormulaM, g/mol
    Sn (tin)118.71
    Sb (antimony)121.76
    Te (tellurium)127.60
    I (iodine)126.90
    Xe (xenon)131.29
    Cs (caesium)132.91
    Ba (barium)137.33
    Recalculate with different values ↑

    FAQ

    What is the molar mass of I?

    M(I) = 126.90 g/mol

    Why is the molar mass of iodine 126.90 and not 254?

    126.90 g/mol is the mass of one mole of I atoms. Elemental iodine is made of I₂ molecules: M(I₂) = 2 × 126.90 = 253.80 g/mol (254 in school problems); in SI units, 0.25380 kg/mol. In a problem about the gas, the molar mass of iodine is usually M(I₂).

    How many grams are in 2 moles of I?

    m = n × M = 2 mol × 126.90 g/mol = 253.80 g.

    See Also