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Names Approved for 3 New Chemical Elements

The periodic table of elements has three new names. The International Union of Pure and Applied Physics, meeting in London on Friday, approved the names for elements that hitherto have been known as Elements 110, 111, and 112, reflecting the number of protons in their nuclei. All are short-lived synthetic substances that were first manufactured at the Society for Heavy Ion Research Laboratory, in Darmstadt, Germany, in the 1990s. The new names, which were also approved by the International Union of Pure and Applied Chemistry, are darmstadtian, roentgenium (after the German scientist who discovered X-rays), and copernicium (after the Polish astronomer who displaced earth from the center of the universe).

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