1) Moscovium 
Ununpentium is the temporary name of a synthetic superheavy element in the periodic table that has the temporary symbol Uup and has the atomic number 115. It is an extremely radioactive element; its most stable known isotope, ununpentium-289, has a half-life of only 220 milliseconds. It is also known as eka-bismuth or simply element 115. Ununpenti...
(from the article `Physical Sciences`) ...in the United States and Russia announced the synthesis of two new superheavy elements, elements 113 and 115. Their interim names pending the ...
Uup noun a radioactive transuranic element