"The periodic table of elements just got a bit heftier Friday, as the names of three new elements were approved by the General Assembly of the International Union of Pure and Applied Physics.

Elements 110, 111 and 112 have been named darmstadtium (Ds), roentgenium (Rg) and copernicium (Cn).

These elements are so large and unstable they can be made only in the lab, and they fall apart into other elements very quickly. Not much is known about these elements, since they aren't stable enough to do experiments on and are not found in nature. They are called "Super Heavy," or Transuranium, elements.

The General Assembly approved these name suggestions proposed by the Joint Working Party on the Discovery of Elements, which is a joint body of IUPAP and the International Union of Pure and Applied Chemistry (IUPAC)."