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Chemists officially add new elements to the periodic table
Kids have to memorize four new elements, now that the powers that be in the world of chemistry have expanded the periodic table. The International Union of Pure and Applied Chemistry has accepted the official names for elements 113, 115, 117 and 118, which it recognized in late December 2015. Previously known by their unappealing placeholder names ununtrium, ununpentium, ununseptium and ununoctium, the elements have been christened Nihonium (Nh), Moscovium (Mc), Tennessine (Ts) and Oganesson (Og), respectively.
