Atomic weights of elements with atomic numbers 110-116 taken from this source. IUPAC Standard Atomic Weights Revised (2005).Under standard conditions, it is the lightest metal and the lightest solid element. It is a soft, silvery-white alkali metal. Fundamental properties of atoms including atomic number and atomic mass. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure. Atomic weights of elements with atomic numbers from 1-109 taken from this source. Atomic number, atomic mass, and isotopes. Atomic Weights of the Elements 2001, Pure Appl.Note 5: The atomic weight of commercial Lithium can vary between 6.939 and 6.996-analysis of the specific material is necessary to find a more accurate value.Ĭhemical series of the periodic table references:.Note 4: The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given.Note 3: The isotopic composition of the element can vary in commercial materials, which can cause the atomic weight to deviate significantly from the given value.Note 2: The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table.However, three elements, Thorium, Protactinium, and Uranium, have a characteristic terrestrial isotopic composition, and thus their atomic mass given. , indicates the mass number of the longest-lived isotope of the element. The isotopic composition of lithium from naturally occurring minerals is 7.5 6Li and 92.5 7Li, which have masses of 6.01512 amu and 7.01600 amu, respectively. Note 1: The element does not have any stable nuclides, and a value in brackets, e.g.Chemical Series of the Periodic Table Alkali metalsĬhemical Series of the Periodic Table Alkali metalsĬhemical series of the periodic table notes: For artificial elements the nucleon count of the most stable isotope is listed as the atomic mass. The number in parenthesis gives the uncertainty in the "concise notation" defined in the IUPAC reference "whereby standard uncertainty is given in parenthesis next to the least significant digits to which it applies", e.g., 1.00794(7) stands for 1.00794 ± 0.00007. Each element's atomic number, name, element symbol, and group and period numbers on the periodic table are given. From Wikipedia, the free encyclopedia This is a list of chemical elements, sorted by atomic mass (or most stable isotope) and color coded according to type of element.
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