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Periodic table (large version)
This large version of the periodic table contains the symbol, name, atomic number, and standard atomic weight of each element. The key below explains the color-coding and layout of each entry.
† A value in brackets, such as [259.1011], is the atomic mass of the most stable isotope unless it is an integer, in which case it is the mass number of the most stable isotope. In all other cases, the value is the relative atomic mass of common terrestrial composition, according to Atomic Weights of the Elements 2001, and includes its uncertainty in parenthesis. For example, the value of 1.00794(7) for hydrogen means that a normal terrestrial isotopic composition of hydrogen has a relative atomic mass of 1.00794 atomic mass units (u) with an uncertainty of 0.00007u, reflecting primarily local variability around the earth.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Periodic_table_(large_version)". A list of authors is available in Wikipedia.|