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Seventh row of periodic table now complete: 4 new elements added

The IUPAC confirms discovery of four new superheavy elements to complete the seventh row of periodic table

By: Tech Desk | Updated: January 4, 2016 4:18:50 pm
periodic table, seventh row of periodic table complete, four new chemical elements ununtrium, science, chemistry, riken institute, Lawrence National Laboratory in California, Joint Institute for Nuclear Research, tech news, technology The decay routes seen here of element 113 (Source: Riken Institute)

The International Union of Pure and Applied Chemistry (IUPAC) has officially confirmed the permanent addition of four new elements to the periodic table. The IUPAC had announced last week that all four elements with atomic number 113, 115, 117 and 118 have met the criteria for discovery.

All these four elements are the first to be added to the periodic table since 2011. The addition of these new elements also completes the seventh row of the periodic table.

The four new elements will be officially named in the next few months but element 113 has been given a placeholder name of ununtrium under IUPAC’s recoemmnendation. IUPAC has credited the Riken Institute in Japan for the discovery of element 113 and it becomes the first element to be named by researchers in Asia.

The discovery of elements 115, 117 and 118 will be accredited to team of scientists from Lawrence National Laboratory in California and the Joint Institute for Nuclear Research in Dubna, Russia. The team had also claimed for discovery of element 113 but IUPAC ruled in favour of Japan’s Riken Institute.

“The work of discovering new superheavy elements is very difficult, and the elements tend to decay extremely quickly—the isotopes of 113 produced at RIKEN lasted for less than a thousandth of a second,” said Kosuke Morita of Riken Institute in a statement. He further added,”We plan to look to the uncharted territory of element 119 and beyond, aiming to examine the chemical properties of the elements in the seventh and eighth rows of the periodic table, and someday to discover the island of stability.”

“To scientists, this is of greater value than an Olympic gold medal,” said Ryoji Noyori, former Riken president and Nobel laureate in Chemistry told The Guardian.

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