Copernicium

Copernicium is atom number 112 — every Copernicium atom has exactly 112 protons in its center, and that number is what makes it Copernicium and nothing else. Its symbol is Cn. At room temperature it is a liquid.

Copernicium is a chemical element with symbol Cn and atomic number 112. It is an extremely radioactive synthetic element that can only be created in a laboratory. The most stable known isotope, copernicium-285, has a half-life of approximately 29 seconds, but it is possible that this copernicium isotope may have a nuclear isomer with a longer half-life, 8.9 min.

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

Copernicium sits in period 7, group 12 of the d-block. Its 112 electrons fill shells of 2, 8, 18, 32, 32, 18, 2 — written as *[Rn] 5f14 6d10 7s2. Its electronegativity is — on the Pauling scale. The outermost shell holds 2 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
Electron affinity: — kJ/mol · Electronegativity (Pauling): —
Density: 14 g/cm³ · melts — · boils 3570 K

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