relative atomic mass

    Cards (2)

    • Relative atomic mass of an element is the mean mass of the isotopes of an element compared to 1/12 of the of the mass of a carbon-12 atom.
    • One isotope has a mass of 35 with a relative abundance of 75%, the other has a mass of 37 with a relative abundance of 25%.
      Ar = (35 x 75) + (37 x 25)     =   35.5
                       (75+25)
    See similar decks