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                      New Elements Added to Periodic Table

   by VOA News

   Chemistry students will now have a tougher time memorizing the periodic
   table.
   Four elements have been added to the table, according to the
   International Union of Pure and Applied Chemistry (IUPAC).
   The elements, which have yet to be officially named, are being called
   Element 113, Element 115, Element 117 and Element 118.
   The new elements also provide a certain symmetry to the periodic table,
   filling out the seventh row of the chart.
   "The chemistry community is eager to see its most cherished table
   finally being completed down to the seventh row," [1]said Professor Jan
   Reedijk, president of the Inorganic Chemistry Division of IUPAC.
   The elements, which were discovered by teams in the U.S., Japan and
   Russia, were observed by colliding smaller, lighter nuclei and tracking
   the decay of the resulting radioactive elements.
   "To scientists, this is of greater value than an Olympic gold medal,"
   Ryoji Noyori, a Nobel laureate in chemistry, told [2]The Guardian
   newspaper.
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   [3]http://www.voanews.com/content/mht-new-elements-added-to-periodic-ta
   ble/3130428.html

References

   1. http://www.iupac.org/news/news-detail/article/discovery-and-assignment-of-elements-with-atomic-numbers-113-115-117-and-118.html
   2. http://www.theguardian.com/science/2016/jan/04/periodic-tables-seventh-row-finally-filled-as-four-new-elements-are-added
   3. http://www.voanews.com/content/mht-new-elements-added-to-periodic-table/3130428.html