Copernicium (Cn)

chemical element with atomic number 112

Atomic Number	112
Atomic Weight	285
mass number	276

Group	12
Period	7
Block	d

proton	112 p⁺
neutron	164 n⁰
electron	112 e^-

Physical Property

Atomic Radius
molar volume
covalent radius	122 pm 137 pm 130 pm
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
dosedh	14 g/cm³

Chemical Property

nerth

proton affinity
electron affinity
ionization energy
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
electron

electron shell	2, 8, 18, 32, 32, 18, 2

valence electron	2 ⓘ

aray an elektrons	[Rn] 5f¹⁴ 6d¹⁰ 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f¹⁴ 6d¹⁰ 7s²

oxidation number	2
electronegativity
Electrophilicity Index
fundamental state of matter

phase of matter	Liquid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
appearance
liw	Colorless
appearance
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
electrical conductivity
electrical resistivity
superconductivity
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
kesweyth
Crystal Structure	()
lattice constant
Lattice Angles
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
classification
Category	Transition metals, Transition metals
CAS Group	IIB
IUPAC Group	IIB
Glawe Number
Mendeleev Number	80
Pettifor Number
Geochemical Class
Goldschmidt classification	synthetic

other

Gas Basicity
polarizability	28 ± 2 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
Neutron Mass Absorption
quantum number	1S0
space group	()

Isotopes of Copernicium

Stable Isotopes	0
Unstable Isotopes	13
Natural Isotopes	0

²⁷⁶Cn

mass number	276
neutron number	164
relative atomic mass	276.161418 ± 0.000537 Da
g-factor	0
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life
spin	0
nuclear quadrupole moment	0
dydhyas diskudhans
parity	+

decay mode	intensity
α (α emission)
SF (spontaneous fission)

²⁷⁷Cn

mass number	277
neutron number	165
relative atomic mass	277.163535 ± 0.000165 Da
g-factor
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life	790 ± 330 us
spin
nuclear quadrupole moment
dydhyas diskudhans	1996
parity

decay mode	intensity
α (α emission)	100%

²⁷⁸Cn

mass number	278
neutron number	166
relative atomic mass	278.164083 ± 0.00047 Da
g-factor	0
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life
spin	0
nuclear quadrupole moment	0
dydhyas diskudhans
parity	+

decay mode	intensity
α (α emission)
SF (spontaneous fission)

²⁷⁹Cn

mass number	279
neutron number	167
relative atomic mass	279.166422 ± 0.000424 Da
g-factor
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life
spin
nuclear quadrupole moment
dydhyas diskudhans
parity

decay mode	intensity
α (α emission)
SF (spontaneous fission)

²⁸⁰Cn

mass number	280
neutron number	168
relative atomic mass	280.167102 ± 0.000626 Da
g-factor	0
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life
spin	0
nuclear quadrupole moment	0
dydhyas diskudhans
parity	+

decay mode	intensity
α (α emission)
SF (spontaneous fission)

²⁸¹Cn

mass number	281
neutron number	169
relative atomic mass	281.169563 ± 0.000427 Da
g-factor
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life	180 ± 80 ms
spin
nuclear quadrupole moment
dydhyas diskudhans	2010
parity

decay mode	intensity
α (α emission)	100%
SF (spontaneous fission)

²⁸²Cn

mass number	282
neutron number	170
relative atomic mass	282.170507 ± 0.000588 Da
g-factor	0
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life	1.1 ± 0.3 ms
spin	0
nuclear quadrupole moment	0
dydhyas diskudhans	2004
parity	+

decay mode	intensity
SF (spontaneous fission)	100%
α (α emission)

²⁸³Cn

mass number	283
neutron number	171
relative atomic mass	283.173202 ± 0.00066 Da
g-factor
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life	4.7 ± 0.8 s
spin
nuclear quadrupole moment
dydhyas diskudhans	2004
parity

decay mode	intensity
α (α emission)	81%
SF (spontaneous fission)	19%

²⁸⁴Cn

mass number	284
neutron number	172
relative atomic mass	284.17436 ± 0.000819 Da
g-factor	0
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life	102 ± 17 ms
spin	0
nuclear quadrupole moment	0
dydhyas diskudhans	2004
parity	+

decay mode	intensity
SF (spontaneous fission)	100%

²⁸⁵Cn

mass number	285
neutron number	173
relative atomic mass	285.177227 ± 0.000544 Da
g-factor
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life	30 ± 8 s
spin
nuclear quadrupole moment
dydhyas diskudhans	2004
parity

decay mode	intensity
α (α emission)	100%

²⁸⁶Cn

mass number	286
neutron number	174
relative atomic mass	286.178691 ± 0.000751 Da
g-factor	0
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life	30 ± 30 s
spin	0
nuclear quadrupole moment	0
dydhyas diskudhans	2016
parity	+

decay mode	intensity
α (α emission)	100%
SF (spontaneous fission)

²⁸⁷Cn

mass number	287
neutron number	175
relative atomic mass	287.181826 ± 0.000751 Da
g-factor
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life
spin
nuclear quadrupole moment
dydhyas diskudhans
parity

decay mode	intensity
α (α emission)
SF (spontaneous fission)

²⁸⁸Cn

mass number	288
neutron number	176
relative atomic mass	288.183501 ± 0.000751 Da
g-factor	0
natural abundance
radioactivity	☢️ elven radyoweythresek
half-life
spin	0
nuclear quadrupole moment	0
dydhyas diskudhans
parity	+

decay mode	intensity
α (α emission)
SF (spontaneous fission)

istori

diskudher po dismyger	GSI Helmholtz Centre for Heavy Ion Research
location of discovery	Germany
dydhyas diskudhans	1996
Etymologyl	Named in honor of the astronomer Nicolaus Copernicus.
pronunciation

source

Abundance
Abundance in Earth's crust
natural abundance (Keynvor)
natural abundance (Korf)	0 %
natural abundance (meteoroid)	0 %
natural abundance (Howl)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Copernicium on ChemicalAid

Australian Educational Vocabulary ID	scot/3590
CAS Registry Number	54084-26-3
ChEBI ID	33517
Den Store Danske ID	copernicium
Encyclopedia of China ID (Second Edition)	249670
Encyclopædia Britannica Online ID	science/copernicium
Freebase ID	/m/025t_2_
French Vikidia ID	Copernicium
Gran Enciclopèdia Catalana ID	0251476
Great Russian Encyclopedia Online ID	3287431
KBpedia ID	Copernicium
NE.se ID	ununbium
NE.se ID	copernicium
OmegaWiki Defined Meaning	368710
Store norske leksikon ID	copernicium
USGS Thesaurus ID	1604
honanieth GND	7550255-0

Copernicium (Cn)

Physical Property

Chemical Property

other

Isotopes of Copernicium

276Cn

277Cn

278Cn

279Cn

280Cn

281Cn

282Cn

283Cn

284Cn

285Cn

286Cn

287Cn

288Cn

istori

source

Nuclear Screening Constants

²⁷⁶Cn

²⁷⁷Cn

²⁷⁸Cn

²⁷⁹Cn

²⁸⁰Cn

²⁸¹Cn

²⁸²Cn

²⁸³Cn

²⁸⁴Cn

²⁸⁵Cn

²⁸⁶Cn

²⁸⁷Cn

²⁸⁸Cn