Oganesson

Atomic symbol: Og
Atomic number: 118
Atomic mass: 294

Appearance: Metallic solid at 25°C

Group: 18
Period: 7
Series: Noble gases
Block: p
Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p⁶ 5f¹⁴ 6d¹⁰ 7s² 7p⁶

A superheavy, transactinide, radioactive and synthetic metal.

Fun Fact! Despite oganesson’s predicted appearance being a metallic solid, due to its positioning in the Periodic Table, it falls under the noble gases group and is proposed to be a nonmetal, noble solid.

https://www.chemicool.com/elements/oganesson.html