Symbol	Ts
Atomnummer	117
Gruppe	17 (Halogener)
Periode	7
Blok	p
Klassifikation	Ukendt

Udseende	-
Farve	-

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

Fra Wikipedia, den gratis encyklopædiTennessin (tidl. også kaldet eka-astat og ununseptium) er et grundstof med atomnummer 117 i det periodiske system, og det kemiske symbol Ts.[1] Dette stof findes ikke i naturen, men kan fremstilles i uhyre beskedne mængder ad gangen i laboratorier. Den 9. juni 2016 blev navnet på tennessin (engelsk: tennessine) offentliggjort af IUPAC, grundstoffet er opkaldt efter den amerikanske delstat Tennessee.

Fase ved STP	Fast
Massefylde	7.17 g/cm3
Atommasse	294 u

Smeltepunkt	723 K 449.85 °C 841.73 °F
Kogepunkt	883 K 609.85 °C 1129.73 °F
Fordampningsvarme	-

Elektronegativitet (Pauling Scale)	-
Elektronaffinitet	165.9 kJ/mol
Oxidationstrin	(−1), (+1), (+3), (+5) (predicted)
Ioniseringsenergier	736.9 kJ/mol 1435.4 kJ/mol 2161.9 kJ/mol 4012.9 kJ/mol 5076.4 kJ/mol

Elektronkonfiguration Kortfattet konfiguration	[Rn] 5f14 6d10 7s2 7p5
Elektronkonfiguration Fuld 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 pr. Skal	2, 8, 18, 32, 32, 18, 7
Valenselektroner
Valency-elektroner
Bohrs atommodel	Figur: Skaldiagram af Tennessin (Ts) atom.
Orbital diagram 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 7s 7p

Opdaget

Joint Institute for Nuclear Research, LLNL, Vandy, ORNL (2009)

Opdagelse af tennessin 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	-