112 Cn 285
Copernicium
transition metal
Properties
- Atomic number
- 112
- Atomic mass
- 285 u
- Category
- transition metal
- Group
- 12
- Period
- 7
- Block
- d-block
- State (room temp)
- Liquid
- Outer-shell electrons
- 2
- Electronegativity
- -
- Density
- 14 g/cm³
- Melting point
- -
- Boiling point
- 3296.85 °C
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹⁴ 6d¹⁰
Noble-gas shorthand: [Rn] 5f¹⁴ 6d¹⁰ 7s²
Electrons per shell: 2, 8, 18, 32, 32, 18, 2, which is 2 in the outermost shell.
Related: electron configuration, the Bohr model, valence electrons.
About Copernicium
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.
- Discovered by Gesellschaft für Schwerionenforschung
Copernicium: frequently asked questions
- What is Copernicium?
- Copernicium (Cn) is the chemical element with atomic number 112. It is a metal: specifically a transition metal.
- What is the atomic number of Copernicium?
- Copernicium's atomic number is 112, which means every Copernicium atom has 112 protons in its nucleus.
- What is the electron configuration of Copernicium?
- The electron configuration of Copernicium is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 (noble-gas shorthand: [Rn] 5f14 6d10 7s2). Its electrons are arranged in shells of 2, 8, 18, 32, 32, 18, 2, with 2 in the outermost shell.
- Is Copernicium a metal or a nonmetal?
- Copernicium is a metal: specifically a transition metal.
- What group and period is Copernicium in?
- Copernicium is in group 12 and period 7 of the periodic table.
- Is Copernicium a solid, liquid, or gas?
- At room temperature, Copernicium is a liquid.
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.