Copernicium (Cn)

Copernicium is the 112th element in the periodic table and has a symbol of Cn and atomic number of 112. It has an atomic weight of (285) and a mass number of 276. Copernicium has one hundred twelve protons and one hundred sixty-four neutrons in its nucleus, and one hundred twelve electrons in seven shells. It is located in group twelve, period seven and block d of the periodic table.

Atomic Number	112
Atomic Weight	285
Mass Number	276

Group	12
Period	7
Block	d

Protons	112 p⁺
Neutrons	164 n⁰
Electrons	112 e^-

Physical Properties

Atomic Radius
Molar Volume
Covalent Radius	122 pm 137 pm 130 pm
Metallic Radius
Ionic Radius
Crystal Radius
Van der Waals Radius
Density	14 g/cm³

Chemical Properties

Energy

Proton Affinity
Electron Affinity
Ionization Energy
Heat of Vaporization
Heat of Fusion
Heat of Formation
Electrons

Electron Shells	2, 8, 18, 32, 32, 18, 2

Valence Electrons	2 ⓘ

Electron Configuration	[Rn] 5f¹⁴ 6d¹⁰ 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f¹⁴ 6d¹⁰ 7s²

Oxidation States	2
Electronegativity
Electrophilicity Index
States of Matter

Phase	Liquid
Gas Phase
Boiling Point
Melting Point
Critical Pressure
Critical Temperature
Triple Point
Visual
Copernicium is a Colorless.
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
The lattice angles of Copernicium is .
Crystal Structure	()
Lattice Constant
Lattice Angles
Mechanical Properties

Hardness
Bulk Modulus
Shear Modulus
Young's Modulus
Poisson Ratio
Speed of Sound
Classification
The CAS Group of Copernicium is IIB. The IUPAC Group of Cn is IIB. The Mendeleev Number of Element 112 is 80. The Goldschmidt Class of Copernicium (Cn) is synthetic.
Category	Transition metals, Transition metals
CAS Group	IIB
IUPAC Group	IIB
Glawe Number
Mendeleev Number	80
Pettifor Number
Geochemical Class
Goldschmidt Class	synthetic

Other

The Dipole Polarizability of Copernicium is 28 plus or minus 2 a₀. The Allotropes of Cn is . The Quantum Numbers of Element 112 is 1S0. The Space Group of Copernicium (Cn) is ().

Gas Basicity
Dipole Polarizability	28 ± 2 a₀
C6 Dispersion Coefficient
Allotropes
Neutron Cross Section
Neutron Mass Absorption
Quantum Numbers	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
Abundance
Radioactivity	☢️ Radioactive
Half Life
Spin	0
Quadrupole Moment	0
Discovery Year
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
Abundance
Radioactivity	☢️ Radioactive
Half Life	790 ± 330 us
Spin
Quadrupole Moment
Discovery Year	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
Abundance
Radioactivity	☢️ Radioactive
Half Life
Spin	0
Quadrupole Moment	0
Discovery Year
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
Abundance
Radioactivity	☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
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
Abundance
Radioactivity	☢️ Radioactive
Half Life
Spin	0
Quadrupole Moment	0
Discovery Year
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
Abundance
Radioactivity	☢️ Radioactive
Half Life	180 ± 80 ms
Spin
Quadrupole Moment
Discovery Year	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
Abundance
Radioactivity	☢️ Radioactive
Half Life	1.1 ± 0.3 ms
Spin	0
Quadrupole Moment	0
Discovery Year	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
Abundance
Radioactivity	☢️ Radioactive
Half Life	4.7 ± 0.8 s
Spin
Quadrupole Moment
Discovery Year	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
Abundance
Radioactivity	☢️ Radioactive
Half Life	102 ± 17 ms
Spin	0
Quadrupole Moment	0
Discovery Year	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
Abundance
Radioactivity	☢️ Radioactive
Half Life	30 ± 8 s
Spin
Quadrupole Moment
Discovery Year	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
Abundance
Radioactivity	☢️ Radioactive
Half Life	30 ± 30 s
Spin	0
Quadrupole Moment	0
Discovery Year	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
Abundance
Radioactivity	☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year
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
Abundance
Radioactivity	☢️ Radioactive
Half Life
Spin	0
Quadrupole Moment	0
Discovery Year
Parity	+

Decay Mode	Intensity
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

Discoverers	GSI Helmholtz Centre for Heavy Ion Research
Discovery Location	Germany
Discovery Year	1996
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
Natural Abundance (Oceans)
Natural Abundance (Human Body)	0 %
Natural Abundance (Meteor)	0 %
Natural Abundance (Sun)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Also Known As

Cn
element 112
ununbium
Uub
ununnunium

Translations

Norwegian Bokmålcopernicium
Frenchcopernicium
Spanishcopernicio
Norwegian Nynorskcopernicium
Finnishkopernikium
Swedishcopernicium
Danishcopernicium
GermanCopernicium
Dutchcopernicium
Hungariankopernícium
Amharicኮፐርኒኪየም
AragoneseCopernicio
Arabicكوبرنيسيوم
Asturiancoperniciu
AzerbaijaniKopernisium
BelarusianКаперніцый
Bulgarianкоперниций
Banglaকোপার্নিসিয়াম
BretonKopernisiom
BosnianKopernicij
Catalancopernici
CorsicanCoperniciu
Czechkopernicium
ChuvashКоперници
WelshCoperniciwm
Greekκοπερνίκιο
Esperantokopernicio
Estoniankoperniitsium
Basquekopernizio
Persianکوپرنیسیم
Northern FrisianKopernikium
FriulianCopernici
IrishCoipeirniciam
Galiciancopernicio
ManxCopernicium
Hakka Chinesecopernicium
Hebrewקופרניקיום
Fiji HindiCopernicium
Croatiankopernicij
Interlinguacopernicium
Indonesiankopernisium
Japaneseコペルニシウム
Kannadaಅನನ್ಬಿಯಮ್
Korean코페르니슘
ColognianCopernicium
KurdishKopernîsyûm
KomiКоперниций
Latincopernicium
LuxembourgishCopernicium
LigurianCopernicio
Lithuaniankopernikis
Latviankopernikijs
Malayalamകോപ്പർനിഷ്യം
Western MariКоперниций
MalayKopernisium
Low GermanCopernicium
Polishkopernik
Portuguesecopernício
QuechuaKopernisyu
Romaniancoperniciu
Russianкоперниций
Siciliancupirniciu
Serbo-CroatianKopernicijum
Slovakkopernícium
Sloveniankopernicij
Albaniancoperniciumi
Serbianкоперницијум
Saterland FrisianCopernicium
Swahiliununbi
Tamilகோப்பர்நீசியம்
Thaiโคเปอร์นิเซียม
Turkishkopernikyum
Uyghurكوپېرنىي
Ukrainianкоперницій
VepsKopernicii
Vietnamesecopernixi
WarayCopernisyo
KalmykКопернициум
YorubaKopernisiomu
Chinese鎶
Italiancopernicio
English (United Kingdom)copernicium
CebuanoCopernicyo
Macedonianкопернициум
Central Kurdishکۆپەرنیسیۆم
Odiaକୋପର୍ନିସିଅମ
Gujaratiકોપરનિસીયમ
Occitancopernici
Tatarкоперниций
Chinese (Hong Kong SAR China)鎶
Chinese (China)鿔
Cantonese鎶
Newariकपरनिसियम
Western Panjabiکاپرنسیم
KazakhКоперниций
Belarusian (Taraskievica orthography)Капэрніц
Chinese (Taiwan)鎶
Chinese (Traditional)鎶
Chinese (Simplified)鿔
AromanianCoperniciu
Nepaliउनुन्बियम
Maltesekoperniċju
Hindiकोपरनिसियम
LimburgishCopernicium
Armenianկոպեռնիցիում
Scottish GaelicCopernicium
Sanskritउनउनबियम
Bhojpuriकॉपरनीशियम
cdoCopernicium
Teluguకోపర్నిషియం
Mongolianкоперници
Min Nan ChineseCopernicium
Paliउनउनबियम
UzbekKopernitsiy
English (Canada)copernicium
Chinese (Macao SAR China)鎶
Chinese (Malaysia)鿔
Chinese (Singapore)鿔
SomaliKobernishiyaam
Portuguese (Brazil)copernício
Literary Chinese鎶
TagalogKopernisiyo
kbpKɔpɛrɩnɩsɩyɔm
AfrikaansKopernikium
Lingua Franca Novacopernisio
Icelandickópernikín
Marathiकोपर्निकम
TajikКоперниcий
Wu Chinese鿔
SardinianCopernìtziu
IdoKopernicio
Burmeseကော့ပါနီဆီယမ်
Egyptian Arabicكوبرنيسيوم
Pashtoکاپرنېسيوم
BashkirКоперниций
CornishKoperniciom
BalineseKopernikium
Georgianკოპერნიციუმი
Urduکوپرنیشیئم

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
GND ID	7550255-0
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

Copernicium (Cn)

Physical Properties

Chemical Properties

Other

Isotopes of Copernicium

276Cn

277Cn

278Cn

279Cn

280Cn

281Cn

282Cn

283Cn

284Cn

285Cn

286Cn

287Cn

288Cn