Discovery of the Elements With Atomic Numbers Z = 113, 115 and 117

Spectroscopic and Computational Characterization of Diethylenetriaminepentaacetic Acid/Transplutonium Chelates: Evidencing Heterogeneity in the Heavy Actinide(III) Series

“…The actinide series has irrevocably changed the world since it has been filled with the transuranium and then transplutonium elements between 1940 and 1961 . Sixty to seventy years later, and in light of tremendous progress in the synthesis of new elements up to oganesson (Og; Z =118), the four transplutonium elements from Am ( Z =95) to Cf ( Z =98) are still the heaviest atoms for which bulk chemistry experiments can be performed. The presence of those elements in nuclear waste and the need for pure heavy actinide targets for the generation of superheavy elements call for a more in‐depth understanding of their coordination chemistry.…”

“…Sixty to seventy years later, and in light of tremendous progress in the synthesis of new elements up to oganesson (Og; Z =118), the four transplutonium elements from Am ( Z =95) to Cf ( Z =98) are still the heaviest atoms for which bulk chemistry experiments can be performed. The presence of those elements in nuclear waste and the need for pure heavy actinide targets for the generation of superheavy elements call for a more in‐depth understanding of their coordination chemistry. Nonetheless, the limited availability of Am and Cm research isotopes and the rarity of purified isotopes of Bk or Cf, combined with their highly radioactive nature, hamper the acquisition of fundamental data in this region of the periodic table.…”

La tabla periódica y sus patrones para la predicción del comportamiento fisicoquímico

“…Los cuadros de la tabla periódica almacenan la información perteneciente a cada uno de los elementos. Actualmente la componen 118 (Karol et al, 2016), los cuales, según el formato de la iupac (International Union of Pure and Applied Chemistry), están representados en el interior de cada cuadro por un símbolo químico de una o más letras que, en la mayoría de los casos, deriva de su nombre en inglés, por ejemplo, el oxígeno representado por la letra O (oxygen). O bien, se usan algunos otros símbolos que provienen de la raíz en otras lenguas, como el oro y la plata, representados por las letras Au y Ag, debido a que derivan de las palabras en latín aurum y argentum, respectivamente.…”

IUPAC and the Periodic Table

“…If the science is accepted, then the discoverers are asked to suggest a name and symbol, and IUPAC then assesses whether the name would prove acceptable to the international community. This exercise was last undertaken and published in 2016 when the discoveries of the elements with Z = 113, 115, 117, and 118 were confirmed [11] and then the names and symbols for these elements nihonium, moscovium, tennessine, and oganesson were officially recognised and recommended for inclusion in the Periodic Table. For an account of these discoveries see [12]. Criteria for acceptable sources used when proposing new names have also recently been published [13].…”