Tennessine
Chemical element
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Tennessine is a synthetic chemical element; it has symbol Ts and atomic number 117. It has the second-highest atomic number and joint-highest atomic mass of all known elements, and is the penultimate element of the 7th period of the periodic... Wikipedia
Symbol: Ts
Discoverers: Yuri Oganessian and Joint Institute for Nuclear Research
Atomic number: 117
Atomic mass: 294 u
Discovered: April 5, 2010
Melting point: 623–823 K (350–550 °C, 662–1022 °F) (predicted)