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  1. The transuranium elements (also known as transuranic elements) are the chemical elements with atomic numbers greater than 92, which is the atomic number of uranium. All of them are radioactively unstable and decay into other elements.

  2. Elemento transurânico. Em química, elemento transurânico é o elemento químico artificial com número atômico maior do que 92, o número atômico do urânio, vindo depois deste na tabela periódica. [ 1] . Todos estes átomos são instáveis devido aos seus grandes núcleos, portanto são radioativos.

  3. transuranium element, any of the chemical elements that lie beyond uranium in the periodic table —i.e., those with atomic numbers greater than 92. Twenty-six of these elements have been discovered and named or are awaiting confirmation of their discovery. Eleven of them, from neptunium through lawrencium, belong to the actinoid series.

  4. In chemistry, a transition metal (or transition element) is a chemical element in the d-block of the periodic table (groups 3 to 12), though the elements of group 12 (and less often group 3) are sometimes excluded. The lanthanide and actinide elements (the f-block) are called inner transition metals and are sometimes considered to be ...

  5. 17 de ago. de 2020 · The transuranic elements and the island of stability. Kit Chapman. Published: 17 August 2020 https://doi.org/10.1098/rsta.2019.0535. Abstract. Since the 1930s the synthesis of nuclides too unstable to exist naturally on Earth has stretched the periodic table to 118 elements.