Símbolo | Ts |
Número atómico | 117 |
Grupo | 17 (Familia del flúor) |
Período | 7 |
Bloque | p |
Clasificación | Desconocido |
Apariencia | - |
Color | - |
Número de protones | 117 p+ |
Número de neutrones | 177 n0 |
Número de electrones | 117 e- |
Fase en STP | Sólido |
Densidad | 7.17 g/cm3 |
Peso atómico | 294 u |
Punto de fusión | 723 K 449.85 °C 841.73 °F |
Punto de ebullición | 883 K 609.85 °C 1129.73 °F |
Entalpía de vaporización | - |
Electronegatividad (Escala de Pauling) | - |
Afinidad electrónica | 165.9 kJ/mol |
Estado de oxidación | (−1), (+1), (+3), (+5) (predicted) |
Energía de ionización |
|
Descubrimiento | Joint Institute for Nuclear Research, LLNL, Vandy, ORNL (2009) |
Descubrimiento de teneso The discovery of tennessine was officially announced in Dubna, Russia, by a Russian–American collaboration in April 2010, which makes it the most recently discovered element as of 2022. One of its daughter isotopes was created directly in 2011, partially confirming the results of the experiment. The experiment itself was repeated successfully by the same collaboration in 2012 and by a joint German–American team in May 2014. In December 2015, the Joint Working Party of the International Union of Pure and Applied Chemistry (IUPAC) and the International Union of Pure and Applied Physics (IUPAP), which evaluates claims of discovery of new elements, recognized the element and assigned the priority to the Russian–American team. In June 2016, the IUPAC published a declaration stating that the discoverers had suggested the name tennessine after Tennessee, United States, a name which was officially adopted in November 2016. |
CAS Number | 87658-56-8 |
ChemSpider ID | - |
EC number | - |
PubChem CID Number | - |