Oganesson

Oganesson is atom number 118 — every Oganesson atom has exactly 118 protons in its center, and that number is what makes it Oganesson and nothing else. Its symbol is Og. At room temperature it is a solid.

Oganesson is IUPAC's name for the transactinide element with the atomic number 118 and element symbol Og. It is also known as eka-radon or element 118, and on the periodic table of the elements it is a p-block element and the last one of the 7th period. Oganesson is currently the only synthetic member of group 18.

Summary from the source dataset, derived from Wikipedia (CC BY-SA 3.0) · original article

Oganesson sits in period 7, group 18 of the p-block. Its 118 electrons fill shells of 2, 8, 18, 32, 32, 18, 8 — written as *[Rn] 5f14 6d10 7s2 7p6. Its electronegativity is — on the Pauling scale. The outermost shell holds 8 electrons — the ones that do all the chemistry.

Full configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p6
Electron affinity: 5.40318 kJ/mol · Electronegativity (Pauling): —
Density: 4.95 g/cm³ · melts — · boils 350 K

Values exactly as published — see where the data comes from.