Atomic number 112
Copernicium
Transition metal
No photo: here’s why
Copernicium is a synthetic element made only in vanishingly small, intensely radioactive amounts - its atoms decay so quickly that no piece big enough to see or photograph has ever existed.
Quick facts
- Atomic mass
- 285.00
- Group
- 12
- Period
- 7
- State (STP)
- unknown
- Electronegativity
- –
- Common ox. states
- +2
Properties
[Rn] 5f¹⁴ 6d¹⁰ 7s²
- Ionization energy
- –
- Electron affinity
- –
- Melting point
- –
- Boiling point
- –
How dangerous is it?
Scientists predict this lab-made element might behave like a volatile metal or even a gas, but it decays so fast that only a few atoms have ever been studied.
- RadioactiveImmediate
Every atom is strongly radioactive as it decays, and no amount large enough to matter has ever existed.
Investigated only by a few labs using remote, heavily shielded instruments.
How it bonds· family overview
Copernicium (Cn) is a synthetic super-heavy element produced one atom at a time. Its position predicts d-block transition-metal chemistry - multiple oxidation states, oxide and halide salts - but only a handful of atoms have ever existed, so the chemistry is largely inferred from group trends.
