Roentgenium (Rg)

chemical element with atomic number 111

Atomic Number	111
Atomic Weight	281
Massagetal	272

Group	11
Period	7
Block	d

proton	111 p⁺
neutron	161 n⁰
elektron	111 e^-

Physical Property

Atoomradius
molar volume
Covalent Radius	121 pm 116 pm 118 pm
Metallic Radius
Ioonradius
Crystal Radius
Van der Waals radius
density	28,7 g/cm³

Chemical Property

energie

proton affinity
electron affinity
ionization energy
Verdampingswarmte
smeltingswarmte
Vormingsentalpie
elektron

Elektronskil	2, 8, 18, 32, 32, 17, 2

Valenselektrone	1 ⓘ

elektronkonfigurasie	[Rn] 5f¹⁴ 6d¹⁰ 7s¹ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f¹⁴ 6d¹⁰ 7s¹

Oksidasietoestand
Elektronegatiwiteit
Electrophilicity Index
fundamental state of matter

phase of matter	Solid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
appearance
kleur	Colorless
appearance
Brekingsindeks
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Geleidingsvermoë
Elektriese resistiwiteit
superconductivity
Magnetisme
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal Structure	()
lattice constant
Lattice Angles
mechanical property
hardness
Massamodulus
Skuifmodulus
Young se modulus
Poisson se verhouding
Spoed van klank
classification
Category	Transition metals, Transition metals
CAS Group	IB
IUPAC Group	IB
Glawe Number
Mendeleev Number	74
Pettifor Number
Geochemical Class
Goldschmidt classification	synthetic

other

Gas Basicity
polarizability	32 ± 6 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
Neutron Mass Absorption
quantum number	2S1/2
Ruimtegroep	()

Isotopes of Roentgenium

Stable Isotopes	0
Unstable Isotopes	15
Natural Isotopes	0

²⁷²Rg

Massagetal	272
neutron number	161
Relative Atomic Mass	272,153273 ± 0,000251 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	4,2 ± 1,1 ms
spin
nuclear quadrupole moment
ontdekkingsdatum	1995
parity

decay mode	intensity
α (α emission)	100%

²⁷³Rg

Massagetal	273
neutron number	162
Relative Atomic Mass	273,153393 ± 0,000429 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin
nuclear quadrupole moment
ontdekkingsdatum
parity

decay mode	intensity
α (α emission)

²⁷⁴Rg

Massagetal	274
neutron number	163
Relative Atomic Mass	274,155247 ± 0,000225 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	20 ± 11 ms
spin
nuclear quadrupole moment
ontdekkingsdatum	2004
parity

decay mode	intensity
α (α emission)	100%

²⁷⁵Rg

Massagetal	275
neutron number	164
Relative Atomic Mass	275,156088 ± 0,000479 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin
nuclear quadrupole moment
ontdekkingsdatum
parity

decay mode	intensity
α (α emission)

²⁷⁶Rg

Massagetal	276
neutron number	165
Relative Atomic Mass	276,158226 ± 0,000675 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin
nuclear quadrupole moment
ontdekkingsdatum
parity

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

²⁷⁷Rg

Massagetal	277
neutron number	166
Relative Atomic Mass	277,159322 ± 0,000504 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin
nuclear quadrupole moment
ontdekkingsdatum
parity

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

²⁷⁸Rg

Massagetal	278
neutron number	167
Relative Atomic Mass	278,16159 ± 0,000417 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	8 ± 5 ms
spin
nuclear quadrupole moment
ontdekkingsdatum	2007
parity

decay mode	intensity
α (α emission)	100%

²⁷⁹Rg

Massagetal	279
neutron number	168
Relative Atomic Mass	279,16288 ± 0,000453 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	170 ± 110 ms
spin
nuclear quadrupole moment
ontdekkingsdatum	2004
parity

decay mode	intensity
α (α emission)	100%

²⁸⁰Rg

Massagetal	280
neutron number	169
Relative Atomic Mass	280,165204 ± 0,000571 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	4,3 ± 0,5 s
spin
nuclear quadrupole moment
ontdekkingsdatum	2004
parity

decay mode	intensity
α (α emission)	100%

²⁸¹Rg

Massagetal	281
neutron number	170
Relative Atomic Mass	281,166757 ± 0,000831 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	19 ± 5 s
spin
nuclear quadrupole moment
ontdekkingsdatum	2010
parity

decay mode	intensity
SF (spontaneous fission)	87%
α (α emission)	13%

²⁸²Rg

Massagetal	282
neutron number	171
Relative Atomic Mass	282,169343 ± 0,000631 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd	130 ± 50 s
spin
nuclear quadrupole moment
ontdekkingsdatum	2010
parity

decay mode	intensity
α (α emission)	100%

²⁸³Rg

Massagetal	283
neutron number	172
Relative Atomic Mass	283,171101 ± 0,000728 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin
nuclear quadrupole moment
ontdekkingsdatum
parity

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

²⁸⁴Rg

Massagetal	284
neutron number	173
Relative Atomic Mass	284,173882 ± 0,000537 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin
nuclear quadrupole moment
ontdekkingsdatum
parity

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

²⁸⁵Rg

Massagetal	285
neutron number	174
Relative Atomic Mass	285,175771 ± 0,000644 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin
nuclear quadrupole moment
ontdekkingsdatum
parity

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

²⁸⁶Rg

Massagetal	286
neutron number	175
Relative Atomic Mass	286,178756 ± 0,000492 Da
g-factor
natural abundance
radioaktiwiteit	☢️ radioactive element
Halfleeftyd
spin
nuclear quadrupole moment
ontdekkingsdatum	2016
parity

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

geskiedenis

Ontdek deur	Heavy Ion Research Laboratory (HIRL)
ligging van ontdekking	Germany
ontdekkingsdatum	1994
etimologie	Named in honor of the physicist Wilhelm Roentgen.
uitspraak	oon-nun-OON-i-em (Engels)

source

Abundance
Abundance in Earth's crust
natural abundance (oseaan)
natural abundance (human body)	0 %
natural abundance (Meteoroïde)	0 %
natural abundance (Son)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Roentgenium on ChemicalAid

Australian Educational Vocabulary ID	scot/9704
CAS Registry Number	54386-24-2
Elhuyar ZTH ID	133475
Encyclopædia Britannica Online ID	science/roentgenium
Freebase-kode	/m/025tpyw
GND ID	7635623-1
Gran Enciclopèdia Catalana ID	0282399
Great Russian Encyclopedia Online ID	3505864
KBpedia ID	Roentgenium
LCCN	sh2012003700
NE.se ID	röntgenium
NE.se ID	unununium
National Library of Israel J9U ID	987007595444605171
OmegaWiki Defined Meaning	350608
Online PWN Encyclopedia ID	4005803
Store norske leksikon ID	røntgenium
USGS Thesaurus ID	1602
WordNet 3.1 Synset ID	14677003-n

Roentgenium (Rg)

Physical Property

Chemical Property

other

Isotopes of Roentgenium

272Rg

273Rg

274Rg

275Rg

276Rg

277Rg

278Rg

279Rg

280Rg

281Rg

282Rg

283Rg

284Rg

285Rg

286Rg

geskiedenis

source

Nuclear Screening Constants

²⁷²Rg

²⁷³Rg

²⁷⁴Rg

²⁷⁵Rg

²⁷⁶Rg

²⁷⁷Rg

²⁷⁸Rg

²⁷⁹Rg

²⁸⁰Rg

²⁸¹Rg

²⁸²Rg

²⁸³Rg

²⁸⁴Rg

²⁸⁵Rg

²⁸⁶Rg