Tenness

Tecken	Ts
Atomnummer	117
Grupp	17 (Halogener)
Period	7
Block	p
Ämnesklass	Okänd

Utseende	-
Färg	-

Antal protoner	117 p+
Antal neutroner	177 n0
Antal elektroner	117 e-

Från Wikipedia, den fria encyklopedinTenness, tidigare även Ununseptium, är ett grundämne med det kemiska tecknet Ts och atomnumret 117. IUPAC föreslog i juni 2016 det permanenta namnet tenness för grundämnet (på engelska tennessine). Det är uppkallat efter den amerikanska delstaten Tennessee, därför att Oak Ridge National Laboratory finns där. Namnet blev formellt accepterat 28 november 2016. Tenness upptäcktes 2009–2010.

Fas vid STP	Fast
Densitet	7.17 g/cm3
Relativ atommassa	294 u

Smältpunkt	723 K 449.85 °C 841.73 °F
Kokpunkt	883 K 609.85 °C 1129.73 °F
Ångbildningsvärme	-

Elektronegativitet (Paulingskalan)	-
Elektronaffinitet	165.9 kJ/mol
Oxidationstal	(−1), (+1), (+3), (+5) (predicted)
Jonisationspotential	736.9 kJ/mol 1435.4 kJ/mol 2161.9 kJ/mol 4012.9 kJ/mol 5076.4 kJ/mol

Elektronkonfiguration Kortfattad konfiguration	[Rn] 5f14 6d10 7s2 7p5
Elektronkonfiguration Full konfiguration	1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p5
Elektronkonfigurationsdiagram	1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p5
Elektroner per skal	2, 8, 18, 32, 32, 18, 7
Valenselektroner	7
Valency-elektroner
Bohrs atommodell	Figur: Skaldiagram över Tenness (Ts) atom.
Orbitaldiagram 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 7s 7p

Upptäckt	Joint Institute for Nuclear Research, Lawrence Livermore National Laboratory, Vanderbilt University, Oak Ridge National Laboratory (2009)
Namngivare	JINR, LLNL, ORNL, Vanderbilt University
Upptäckten av tenness 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.

Original word	Tennessee
Language of origin	English
Name source	Plats
Meaning	“Tennessee”
Land	United States
Naming The element is named after the US state of Tennessee, where Oak Ridge and Vanderbilt research groups contributed to the discovery.

CAS Number	87658-56-8
ChemSpider ID	-
EC number	-
PubChem CID Number	-