Four New Elements Added To The Periodic Table
Elements with atomic numbers 113, 115, 117, and 118 have been added to the periodic table. (January 2016)
Update: These new elements have been named. (November 2016)
Uununtrium becomes Nihonium, Nh
Ununpentium becomes Moscovium, Mc
Ununseptium becomes Tennessine, Ts
Ununoctium becomes Oganesson, Og
Source: https://iupac.org/iupac-is-naming-the-four-new-elements-nihonium-moscovium-tennessine-and-oganesson/
Elements with atomic numbers 113, 115, 117, and 118 have been added to the periodic table. (January 2016)
Update: These new elements have been named. (November 2016)
Uununtrium becomes Nihonium, Nh
Ununpentium becomes Moscovium, Mc
Ununseptium becomes Tennessine, Ts
Ununoctium becomes Oganesson, Og
Source: https://iupac.org/iupac-is-naming-the-four-new-elements-nihonium-moscovium-tennessine-and-oganesson/
Element 117 discovered?
On 1 May 2014 a paper published in Phys. Rev. Lett by J. Khuyagbaatar and others states the superheavy element with atomic number Z = 117 (ununseptium) was produced as an evaporation residue in the 48Ca and 249Bk fusion reaction at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. The radioactive decay of evaporation residues and their α-decay products was studied using a detection setup that allows measurement of decays of single atomic nuclei with very short half-lives . Two decay chains comprising seven α-decays and a spontaneous fission each were identified and assigned to the isotope 294Uus (element 117) and its decay products.
On 1 May 2014 a paper published in Phys. Rev. Lett by J. Khuyagbaatar and others states the superheavy element with atomic number Z = 117 (ununseptium) was produced as an evaporation residue in the 48Ca and 249Bk fusion reaction at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. The radioactive decay of evaporation residues and their α-decay products was studied using a detection setup that allows measurement of decays of single atomic nuclei with very short half-lives . Two decay chains comprising seven α-decays and a spontaneous fission each were identified and assigned to the isotope 294Uus (element 117) and its decay products.