112
Cn
285
Copernicium (Cn)
Element 112 · Period 7 · Group 12
transition-metal
solid at room temp
d-block
radioactive
synthetic
About Copernicium
Named after Copernicus. May be a gas at STP due to relativistic effects.
Physical Properties
Atomic Mass
285 u
State at 25°C
Solid
Boiling Point
357 °C
Density
14 g/cm³
Magnetism
Unknown
Atomic Properties
Electron Configuration
[Rn] 5f¹⁴ 6d¹⁰ 7s²
Electron Shells
2, 8, 18, 32, 32, 18, 2
Oxidation States
+2, +4
Discovery & History
Discovered By
Peter Armbruster
Discovery Year
1996
Named By
IUPAC
Name origin: Nicolaus Copernicus
Frequently Asked Questions
- Is Copernicium a metal, nonmetal, or metalloid?
- Copernicium is classified as a transition-metal.
- What state is Copernicium in at room temperature?
- Copernicium is a solid at standard room temperature (25°C).
- What is the atomic mass of Copernicium?
- Copernicium has an atomic mass of 285 atomic mass units (u).
- Who discovered Copernicium?
- Copernicium was discovered by Peter Armbruster in 1996.
- Where is Copernicium on the periodic table?
- Copernicium is element number 112, located in period 7 and group 12.