Periodic table

The periodic table of the chemical elements, also called the Mendeleev periodic table, is a tabular display of the known chemical elements. First created by Dmitri Mendeleev, the elements are arranged by electron configuration so that many chemical properties follow a regular pattern across the table. Each element is listed by its atomic number and chemical symbol. Mendeleev's ordering of the periodic table was one of the greatest developments in modern chemistry. Chemists were able to quantitatively explain the behavior of the elements, and to predict the existence of yet undiscovered ones. There are 116 chemical elements whose discoveries has been confirmed. Ninety four can be found naturally on Earth, and the rest have been produced in laboratories.

See also

• Chemical Galaxy
• Periodic table group
• Periodic table period
• Chemical series
• Periodic table block
• Atomic electron configuration table
• Isotope table (complete)
• Isotope table (divided)
• Discoveries of the chemical elements
• Abundance of the chemical elements
• The Elements song
• IUPAC's systematic element names
• Dmitri Mendeleyev
• Cosmochemical Periodic Table of the Elements in the Solar System