Dúibniam (Db)

chemical element with the atomic number of 105

Atomic Number	105
Atomic Weight	268
Núicléónuimhir	255

Group	5
Period	7
Block	d

prótón	105 p⁺
neodrón	150 n⁰
leictreon	105 e^-

Physical Property

Ga Adamhach
molar volume
covalent radius	149 pm 136 pm 126 pm
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
dlús	29.3 g/cm³

Chemical Property

fuinneamh

proton affinity
electron affinity
ionization energy	6.8 eV/particle 14 eV/particle 23.1 eV/particle 33 eV/particle 43 eV/particle 86 eV/particle 98.9 eV/particle 126 eV/particle 145 eV/particle 172 eV/particle 196 eV/particle 220.9 eV/particle 254 eV/particle 274 eV/particle 307 eV/particle 838 eV/particle 872 eV/particle 908 eV/particle 948 eV/particle 985 eV/particle 1,022 eV/particle 1,089 eV/particle 1,126 eV/particle 1,168 eV/particle 1,207 eV/particle 3,975 eV/particle 4,057 eV/particle 4,145 eV/particle 4,237 eV/particle 4,326 eV/particle 4,411 eV/particle 4,620 eV/particle 4,710 eV/particle 4,810 eV/particle 4,900 eV/particle 5,260 eV/particle 5,350 eV/particle 5,450 eV/particle 5,530 eV/particle 6,280 eV/particle 6,380 eV/particle 6,650 eV/particle 6,760 eV/particle 10,420 eV/particle 10,610 eV/particle 10,820 eV/particle 11,040 eV/particle 11,240 eV/particle 11,440 eV/particle 12,040 eV/particle 12,250 eV/particle 12,480 eV/particle 12,700 eV/particle 13,300 eV/particle 13,500 eV/particle 13,700 eV/particle 13,900 eV/particle 16,200 eV/particle 16,400 eV/particle 16,900 eV/particle 17,100 eV/particle 33,800 eV/particle 34,300 eV/particle 34,800 eV/particle 35,300 eV/particle 43,800 eV/particle 44,500 eV/particle 45,400 eV/particle 181,444 eV/particle

enthalpy of vaporization
enthalpy of fusion
eantalpacht chaighdeánach an fhoirmithe
leictreon

electron shell	2, 8, 18, 32, 32, 11, 2

Fiúsleictreon	2 ⓘ

cumraíocht leictreon	[Rn] 5f¹⁴ 6d³ 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f¹⁴ 6d³ 7s²

Staid ocsaídiúcháine	5
Leictridhiúltacht
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
dath	Colorless #d1004f
appearance
Comhéifeacht athraonta
thermodynamic material property
Thermal Conductivity
Forbairt theirmeach
molar heat capacity
Specific Heat Capacity
Cóimheas saintoilleadh teasa
electrical properties
type
electrical conductivity
Friotachas
Forsheoltacht
Maighnéadas
type
So-ghabhálacht mhaighnéadach (Mass)
So-ghabhálacht mhaighnéadach (Molar)
So-ghabhálacht mhaighnéadach (Volume)
magnetic ordering
Teocht Curie
Néel temperature
struchtúr
Crystal Structure	{ERROR}
lattice constant
Lattice Angles
airíonna meicniúla
Cruas
Modal toirte
modal fiartha
modal Young
Cóimheas Poisson
luas forleata fuaime
aicmiúchán
Category	Transition metals, Transition metals
CAS Group	VA
IUPAC Group	VB
Glawe Number
Mendeleev Number	50
Pettifor Number
Geochemical Class
Goldschmidt classification	synthetic

eile

Gas Basicity
polarizability	42 ± 4 a₀
C6 Dispersion Coefficient
allotrope
Crosghearradh
Neutron Mass Absorption
Uimhir chandamach	4F3/2
space group	()

Isotopes of Dubnium

Stable Isotopes	0
Unstable Isotopes	16
Natural Isotopes	0

²⁵⁵Db

Núicléónuimhir	255
neutron number	150
Mais Adamhach Choibhneasta	255.106919 ± 0.000304 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	54 ms
Guairne	9/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1976
Paireacht	+

decay mode	intensity
SF (spontaneous fission)	67%
α (α emission)

²⁵⁶Db

Núicléónuimhir	256
neutron number	151
Mais Adamhach Choibhneasta	256.107674 ± 0.000201 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	1.7 ± 0.4 s
Guairne	9
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2001
Paireacht	-

decay mode	intensity
α (α emission)	70%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	30%
SF (spontaneous fission)

²⁵⁷Db

Núicléónuimhir	257
neutron number	152
Mais Adamhach Choibhneasta	257.107520042 ± 0.000176741 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	2.3 ± 0.2 s
Guairne	9/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1985
Paireacht	+

decay mode	intensity
α (α emission)	94%
SF (spontaneous fission)	6%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁵⁸Db

Núicléónuimhir	258
neutron number	153
Mais Adamhach Choibhneasta	258.108972995 ± 0.000098613 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	2.17 ± 0.36 s
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	1985
Paireacht	-

decay mode	intensity
α (α emission)	64%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	36%

²⁵⁹Db

Núicléónuimhir	259
neutron number	154
Mais Adamhach Choibhneasta	259.109491859 ± 0.000060854 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	510 ± 160 ms
Guairne	9/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2001
Paireacht	+

decay mode	intensity
α (α emission)	100%

²⁶⁰Db

Núicléónuimhir	260
neutron number	155
Mais Adamhach Choibhneasta	260.111297 ± 0.0001 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	1.52 ± 0.13 s
Guairne
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1970
Paireacht

decay mode	intensity
α (α emission)	90.4%
SF (spontaneous fission)	9.6%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁶¹Db

Núicléónuimhir	261
neutron number	156
Mais Adamhach Choibhneasta	261.111979 ± 0.000118 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	4.7 ± 1 s
Guairne	9/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1970
Paireacht	+

decay mode	intensity
SF (spontaneous fission)	73%
α (α emission)	27%

²⁶²Db

Núicléónuimhir	262
neutron number	157
Mais Adamhach Choibhneasta	262.114067 ± 0.000154 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	34 ± 4 s
Guairne
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1971
Paireacht

decay mode	intensity
SF (spontaneous fission)	52%
α (α emission)	48%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁶³Db

Núicléónuimhir	263
neutron number	158
Mais Adamhach Choibhneasta	263.114987 ± 0.00018 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	29 ± 9 s
Guairne	9/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1992
Paireacht	+

decay mode	intensity
SF (spontaneous fission)	56%
α (α emission)	37%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	6.9%

²⁶⁴Db

Núicléónuimhir	264
neutron number	159
Mais Adamhach Choibhneasta	264.117297 ± 0.000253 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh
Paireacht

decay mode	intensity
α (α emission)

²⁶⁵Db

Núicléónuimhir	265
neutron number	160
Mais Adamhach Choibhneasta	265.1185 ± 0.00024 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	9/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh
Paireacht	+

decay mode	intensity
α (α emission)

²⁶⁶Db

Núicléónuimhir	266
neutron number	161
Mais Adamhach Choibhneasta	266.121032 ± 0.000304 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	80 ± 70 m
Guairne
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2007
Paireacht

decay mode	intensity
α (α emission)
SF (spontaneous fission)
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²⁶⁷Db

Núicléónuimhir	267
neutron number	162
Mais Adamhach Choibhneasta	267.122399 ± 0.000402 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	2 ± 1.1 h
Guairne	9/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2004
Paireacht	+

decay mode	intensity
SF (spontaneous fission)	100%

²⁶⁸Db

Núicléónuimhir	268
neutron number	163
Mais Adamhach Choibhneasta	268.125669 ± 0.000568 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	29 ± 3 h
Guairne
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2004
Paireacht

decay mode	intensity
SF (spontaneous fission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)
α (α emission)

²⁶⁹Db

Núicléónuimhir	269
neutron number	164
Mais Adamhach Choibhneasta	269.127911 ± 0.000669 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	9/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh
Paireacht	+

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

²⁷⁰Db

Núicléónuimhir	270
neutron number	165
Mais Adamhach Choibhneasta	270.131399 ± 0.000617 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	1.7 ± 1 h
Guairne
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2010
Paireacht

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

stair

fionnachtaí nó aireagóir	A. Ghiorso, et al
áit ar tháinig air/uirthi	United States
dáta fionnachtana nó tionscnaimh	1970
Sanasaíocht	Named after the city of Dubna, the site of the JINR.
pronunciation	HA-ni-em (Béarla)

foinse

Abundance
Abundance in Earth's crust
natural abundance (aigéan)
natural abundance (corp an duine)	0 %
natural abundance (dreigeoideach)	0 %
natural abundance (An Ghrian)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Dúibniam on ChemicalAid

Australian Educational Vocabulary ID	scot/3514
DSSTOX compound identifier	DTXCID801323011
DSSTox substance ID	DTXSID30893063
Den Store Danske ID	dubnium
ECHA Substance Infocard ID	100.126.367
Elhuyar ZTH ID	064402
Encyclopedia of China (Third Edition) ID	185643
Encyclopædia Britannica Online ID	science/dubnium
Freebase ID	/m/0274b33
Great Russian Encyclopedia Online ID	1969523
ID GND	4293095-9
ID Gran Enciclopèdia Catalana	0272492
KBpedia ID	Dubnium
NKCR AUT ID	ph928215
OmegaWiki Defined Meaning	157650
Store norske leksikon ID	dubnium
Treccani ID	dubnio
USGS Thesaurus ID	1442
uimhir CAS	53850-35-4

Dúibniam (Db)

Physical Property

Chemical Property

eile

Isotopes of Dubnium

255Db

256Db

257Db

258Db

259Db

260Db

261Db

262Db

263Db

264Db

265Db

266Db

267Db

268Db

269Db

270Db

stair

foinse

Nuclear Screening Constants

²⁵⁵Db

²⁵⁶Db

²⁵⁷Db

²⁵⁸Db

²⁵⁹Db

²⁶⁰Db

²⁶¹Db

²⁶²Db

²⁶³Db

²⁶⁴Db

²⁶⁵Db

²⁶⁶Db

²⁶⁷Db

²⁶⁸Db

²⁶⁹Db

²⁷⁰Db