Four New Elements Added to Periodic Table: IUPAC

Four New Elements Added to Periodic Table: IUPAC

Four new elements, Nihonium (Nh), moscovium (Mc), tennessine (Ts), and oganesson (Og) have been officially added to periodic table of the elements. The addition of new elements to the periodic table has been approved by the International Union of Pure and Applied Chemistry (IUPAC). The discovery of these elements was confirmed in December last year.

The International Union of Pure and Applied Chemistry (IUPAC) had suggested names for these four elements in June this year. After five month period for public comments, the names have been finalized and have been officially added to periodic table. The seventh row of periodic table will be complete with the addition of new elements.

The elements Nh, Mc, Ts, and Og have been officially designated as elements 113, 115, 117, and 118 in periodic table. The elements will come up as the heaviest elements in periodic table.

These four elements are not stable and they break apart into other elements within fractions of a second. These elements are man-made or synthetic and don’t exist in nature.

The element 113 was earlier named as ununtrium with the symbol Uut but has been officially named nihonium. The periodic table symbol for the element is Nh.

Only element discoverers have the right to propose names and symbols for elements. Under these guidelines, IUPAC had to reject most of the suggestions from public regarding naming of elements and their symbols.

Professor Jan Reedijk, the president of IUPAC's inorganic chemistry division said, “Overall, it was a real pleasure to realize that so many people are interested in the naming of the new elements. For now, we can all cherish our periodic table completed down to the seventh row.”

In a statement issued to CS Monitor, Janan Hayes, professor emeritus at Merced College in California and former chair of the American Chemical Society’s Division of History of Chemistry said, “It used to be that when a discovery was made, when you thought you had one, you named it something. But this was very confusing because you could end up with three or four names for an element as three or four different groups or laboratories claimed discovery. What makes the naming important internationally is that the name is accepted internationally.”

The report published by CS Monitor further informed, “These are the first elements added to the centuries-old periodic table since 2011, when heavy metal band members livermorium (element 116) and flerovium (element 114) were added to the table. Adding new names to the table is not something scientists – or the general public – take lightly, as the five-month process suggests.”


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