These files include the latest IUPAC values.
The first chemical element is Hydrogen and the last is Ununoctium, this is the list of elements according to their Atomic number: But you can find the specifications, such as: In this periodic table of elements, it is not shown how they relate to each other within the Periodic system. It lists the atomic weights to 5 significant figures, all that is needed for many purposes. This version is appropriate for most uses, in particular for school use and many university requirements. The 5-figure version is called the periodic table. The structure of the table shows periodic trends.
The periodic table of elements (in short: periodic table) is a tabular display of the common chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties.
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