Copernicium

Copernicium (Cn)

Atomic Number112
Atomic Weight285
Mass Number276
Group12
Period7
Blockd
Protons112 p+
Neutrons164 n0
Electrons112 e-
Elektronskal 112.png Animated Bohr Model of Cn (Copernicium) Enhanced Bohr Model of Cn (Copernicium) Bohr Model: Cn (Copernicium) Orbital Diagram of Cn (Copernicium)

Properties

Atomic Radius
Molar Volume
Covalent Radius
122 pm
Metallic Radius
Ionic Radius
Crystal Radius
Van der Waals Radius
Density
Energy
Proton Affinity
Electron Affinity
Ionization Energy
Heat of Vaporization
Heat of Fusion
Heat of Formation
Electrons
Electron Shells2, 8, 18, 32, 32, 18, 2
Valence Electrons0
Electron Configuration[Rn] 5f14 6d10 7s2
Oxidation States2
Electronegativity
Electrophilicity
Phases
PhaseLiquid
Gas Phase
Boiling Point
Melting Point
Critical Pressure
Critical Temperature
Triple Point
Visual
Color
Colorless
Appearance
Refractive Index
Thermodynamic Properties
Thermal Conductivity
Thermal Expansion
Molar Heat Capacity
Specific Heat Capacity
Heat Capacity Ratio (Adiabatic Index)
Electrical Properties
Type
Electrical Conductivity
Electrical Resistivity
Superconducting Point
Magnetism
Type
Magnetic Susceptibility (Mass)
Magnetic Susceptibility (Molar)
Magnetic Susceptibility (Volume)
Magnetic Ordering
Curie Point
Neel Point
Structure
Crystal Structure ()
Lattice Constant
Lattice Angles
Mechanical Properties
Hardness
Bulk Modulus
Shear Modulus
Young Modulus
Poisson Ratio
Speed of Sound
Classification
CategoryTransition metals, Transition metals
CAS GroupIIB
IUPAC GroupIIB
Glawe Number
Mendeleev Number80
Pettifor Number
Geochemical Class
Goldschmidt Classsynthetic
Other
Gas Basicity
Dipole Polarizability
28 ± 2 a₀
C6 Dispersion Coefficient
Allotropes
Neutron Cross Section
Neutron Mass Absorption
Quantum Numbers1S0
Space Group ()

Isotopes of Copernicium

Stable Isotopes0
Unstable Isotopes13
Radioactive Isotopes13

276Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
276.161418 ± 0.000537 Da
Mass Number276
G-Factor
0
Half Life
Spin0
Quadrupole Moment
0
Discovery Year
Parity+

276Cn Decay Modes
Decay ModeIntensity
α (α emission)%
SF (spontaneous fission)%

277Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
277.163535 ± 0.000165 Da
Mass Number277
G-Factor
Half Life
790 ± 330 us
Spin
Quadrupole Moment
Discovery Year1996
Parity

277Cn Decay Modes
Decay ModeIntensity
α (α emission)100%

278Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
278.164083 ± 0.00047 Da
Mass Number278
G-Factor
0
Half Life
Spin0
Quadrupole Moment
0
Discovery Year
Parity+

278Cn Decay Modes
Decay ModeIntensity
α (α emission)%
SF (spontaneous fission)%

279Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
279.166422 ± 0.000424 Da
Mass Number279
G-Factor
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

279Cn Decay Modes
Decay ModeIntensity
α (α emission)%
SF (spontaneous fission)%

280Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
280.167102 ± 0.000626 Da
Mass Number280
G-Factor
0
Half Life
Spin0
Quadrupole Moment
0
Discovery Year
Parity+

280Cn Decay Modes
Decay ModeIntensity
α (α emission)%
SF (spontaneous fission)%

281Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
281.169563 ± 0.000427 Da
Mass Number281
G-Factor
Half Life
180 ± 80 ms
Spin
Quadrupole Moment
Discovery Year2010
Parity

281Cn Decay Modes
Decay ModeIntensity
α (α emission)100%
SF (spontaneous fission)%

282Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
282.170507 ± 0.000588 Da
Mass Number282
G-Factor
0
Half Life
1.1 ± 0.3 ms
Spin0
Quadrupole Moment
0
Discovery Year2004
Parity+

282Cn Decay Modes
Decay ModeIntensity
SF (spontaneous fission)100%
α (α emission)%

283Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
283.173202 ± 0.00066 Da
Mass Number283
G-Factor
Half Life
4.7 ± 0.8 s
Spin
Quadrupole Moment
Discovery Year2004
Parity

283Cn Decay Modes
Decay ModeIntensity
α (α emission)81%
SF (spontaneous fission)19%

284Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
284.17436 ± 0.000819 Da
Mass Number284
G-Factor
0
Half Life
102 ± 17 ms
Spin0
Quadrupole Moment
0
Discovery Year2004
Parity+

284Cn Decay Modes
Decay ModeIntensity
SF (spontaneous fission)100%

285Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
285.177227 ± 0.000544 Da
Mass Number285
G-Factor
Half Life
30 ± 8 s
Spin
Quadrupole Moment
Discovery Year2004
Parity

285Cn Decay Modes
Decay ModeIntensity
α (α emission)100%

286Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
286.178691 ± 0.000751 Da
Mass Number286
G-Factor
0
Half Life
30 ± 30 s
Spin0
Quadrupole Moment
0
Discovery Year2016
Parity+

286Cn Decay Modes
Decay ModeIntensity
α (α emission)100%
SF (spontaneous fission)%

287Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
287.181826 ± 0.000751 Da
Mass Number287
G-Factor
Half Life
Spin
Quadrupole Moment
Discovery Year
Parity

287Cn Decay Modes
Decay ModeIntensity
α (α emission)%
SF (spontaneous fission)%

288Cn

AbundanceRadioactive ☢️
Relative Atomic Mass
288.183501 ± 0.000751 Da
Mass Number288
G-Factor
0
Half Life
Spin0
Quadrupole Moment
0
Discovery Year
Parity+

288Cn Decay Modes
Decay ModeIntensity
α (α emission)%
SF (spontaneous fission)%

History

Copernicium was first created on February 9, 1996, at the Institute for Heavy Ion Research (Gesellschaft für Schwerionenforschung) in Darmstadt, Germany, by Sigurd Hofmann, Victor Ninov et al. This element was created by firing accelerated zinc-70 nuclei at a target made of lead-208 nuclei in a heavy ion accelerator. A single atom of copernicium was produced with a mass number of 277. Named after the astronomer Nicolaus Copernicus

DiscoverersGSI Helmholtz Centre for Heavy Ion Research
Discovery LocationGermany
Discovery Year1996
Etymology (Name Origin)Named in honor of the astronomer Nicolaus Copernicus.
Pronunciation
Copernicium is harmful due to its radioactivity
Copernicium has no stable or naturally-occurring isotopes

Uses

Copernicium is used for scientific research purposes only. It has no significant commercial applications.

Sources

Made by bombarding lead-208 with zinc-70.

Abundance
Abundance in Earth's crust
Abundance in Oceans
Abundance in Human Body
0 %
Abundance in Meteor
0 %
Abundance in Sun
0 %
Abundance in Universe
0 %

Nuclear Screening Constants