The International Union of Pure and Applied Chemistry (IUPAC) has officially confirmed the permanent addition of four new elements to the periodic table.
- The announcement has been made that all four elements with atomic number 113, 115, 117 and 118 have met the criteria for discovery.
- The addition of these new elements also completes the seventh row of the periodic table.
- Riken Institute in Japan has been credited for the discovery of element 113 and it becomes the first element to be named by researchers in Asia.
The four new elements will be named in the next few months but element 113 has been given a placeholder name of ununtrium under IUPAC’s recommendation.
Temporary working names & symbols of newly discovered elements
Element 113 (ununtrium, Uut)
- The RIKEN collaboration team in Japan have fulfilled the criteria for element Z=113 and will be invited to propose a permanent name and symbol.
Elements 115, 117, and 118 (ununpentium, Uup; ununseptium, Uus and ununoctium, Uuo)
- The collaboration between the Joint Institute for Nuclear Research in Dubna, Russia; Lawrence Livermore National Laboratory, California, USA and Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA have fulfilled the criteria for element Z=115, 117, 118 and will be invited to propose permanent names and symbols.
What is Periodic Table?
The periodic table aka Mendeleev’s table is a tabular arrangement of the chemical elements, ordered by their atomic number (number of protons in the nucleus), electron configurations and recurring chemical properties.
- The table also shows four rectangular blocks: s-, p- d- and f-block.
- The rows of the table are called periods & the columns are called groups.
- It was created in 1869 by Russian chemist Dmitri Mendeleev.