Symbol	Ts
Atomic number	117
Group	17 (Fluorine group)
Period	7
Block	p
Classification	Unknown

Appearance	-
Color	-

Number of protons	117 p+
Number of neutrons	177 n0
Number of electrons	117 e-

From Wikipedia, the free encyclopediaTennessine is a superheavy artificial chemical element with an atomic number of 117 and a symbol of Ts. Also known as eka-astatine or element 117, it is the second-heaviest known element and penultimate element of the 7th period of the periodic table. As of 2016, fifteen tennessine atoms have been observed:six when it was first synthesized in 2010, seven in 2012, and two in 2014.

Phase at STP	Solid
Density	7.17 g/cm3
Atomic weight	294 u

Melting point	723 K 449.85 °C 841.73 °F
Boiling point	883 K 609.85 °C 1129.73 °F
Heat of vaporization	-

Electronegativity (Pauling Scale)	-
Electron affinity	165.9 kJ/mol
Oxidation states	(−1), (+1), (+3), (+5) (predicted)
Ionization energies	736.9 kJ/mol 1435.4 kJ/mol 2161.9 kJ/mol 4012.9 kJ/mol 5076.4 kJ/mol

Electron configuration Shorthand configuration	[Rn] 5f14 6d10 7s2 7p5
Electron configuration Full configuration	1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p5
Electron configuration chart	1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f14 6s2 6p6 6d10 7s2 7p5
Electrons per shell	2, 8, 18, 32, 32, 18, 7
Valence electrons
Valency electrons
Bohr model	Figure: Shell diagram of Tennessine (Ts) atom.
Orbital Diagram 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 6s 6p 6d 7s 7p

Discovery

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

Discovery of tennessine 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	-