Periodic Table’s 7th Row Is Complete, Officials Confirm

Chemistry teachers and science geeks worldwide are cheering the confirmation of four new elements, completing the Periodic Table’s 7th row.

The independent discoveries of the elements were confirmed by the International Union of Pure and Applied Chemistry (IUPAC) and the International Union of Pure and Applied Physics (IUPAP). The elements were given temporary names and symbols until their founders can come up with names. The decisions are outlined in two new papers accepted for publication in the journal Pure and Applied Chemistry.


Newly updated Periodic Table of Elements. Image credit:, IUPAP

Dr Mark Cesa, President of the IUPAC said, “As the global organization that provides objective scientific expertise and develops the essential tools for the application and communication of chemical knowledge for the benefit of humankind, IUPAC is pleased and honored to make this announcement concerning elements 113, 115, 117, and 118 and the completion of the 7th row of the periodic table of elements.”

As of now the elements are known as: Element 113 (Ununtrium, symbol Uut), Element 115 (Ununpentium, symbol Uup), Element 117 (Ununseptium, symbol Uus) and Element 118 (Ununoctium, symbol Uuo). Element 113 was discovered at the RIKEN Nishina Center for Accelerator-based Science in Japan. Element 115 and Element 117 were discovered by the Dubna/ Livermore/ Oak Ridge collaboration. And Element 118 by Dubna/ Livermore.

“The chemistry community is eager to see its most cherished table finally being completed down to the 7th row,” said Jan Reedijk, President of the Inorganic Chemistry Division of IUPAC.

“We are excited about these new elements, and we thank the dedicated scientists who discovered them for their painstaking work, as well the members of the IUPAC/IUPAP Joint Working Party for completing their essential and critically important task,” Dr Cesa added.

Materials provided by the IUPAC, IUPAP.


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