Dubenu (Db)

chemical element with the atomic number of 105

Atomic Number	105
Atomic Weight	268
mass number	255

Group	5
Period	7
Block	d

Proton	105 p⁺
Netron	150 n⁰
Eléktron	105 e^-

Physical Property

Atomic Radius
molar volume
covalent radius	149 pm 136 pm 126 pm
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
density	29,3 g/cm³

Chemical Property

molungé

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
standard enthalpy of formation
Eléktron

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

valence electron	2 ⓘ

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

oxidation number	5
electronegativity
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
Lángi	Colorless #d1004f
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
structure
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	VA
IUPAC Group	VB
Glawe Number
Mendeleev Number	50
Pettifor Number
Geochemical Class
Goldschmidt classification	synthetic

other

Gas Basicity
polarizability	42 ± 4 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
Neutron Mass Absorption
quantum number	4F3/2
space group	()

Isotopes of Dubnium

Stable Isotopes	0
Unstable Isotopes	16
Natural Isotopes	0

²⁵⁵Db

mass number	255
neutron number	150
Relative Atomic Mass	255,106919 ± 0,000304 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	54 ms
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1976
parity	+

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

²⁵⁶Db

mass number	256
neutron number	151
Relative Atomic Mass	256,107674 ± 0,000201 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,7 ± 0,4 s
spin	9
nuclear quadrupole moment
time of discovery or invention	2001
parity	-

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

²⁵⁷Db

mass number	257
neutron number	152
Relative Atomic Mass	257,107520042 ± 0,000176741 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	2,3 ± 0,2 s
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1985
parity	+

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

²⁵⁸Db

mass number	258
neutron number	153
Relative Atomic Mass	258,108972995 ± 0,000098613 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	2,17 ± 0,36 s
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1985
parity	-

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

²⁵⁹Db

mass number	259
neutron number	154
Relative Atomic Mass	259,109491859 ± 0,000060854 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	510 ± 160 ms
spin	9/2
nuclear quadrupole moment
time of discovery or invention	2001
parity	+

decay mode	intensity
α (α emission)	100%

²⁶⁰Db

mass number	260
neutron number	155
Relative Atomic Mass	260,111297 ± 0,0001 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,52 ± 0,13 s
spin
nuclear quadrupole moment
time of discovery or invention	1970
parity

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

²⁶¹Db

mass number	261
neutron number	156
Relative Atomic Mass	261,111979 ± 0,000118 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	4,7 ± 1 s
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1970
parity	+

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

²⁶²Db

mass number	262
neutron number	157
Relative Atomic Mass	262,114067 ± 0,000154 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	34 ± 4 s
spin
nuclear quadrupole moment
time of discovery or invention	1971
parity

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

²⁶³Db

mass number	263
neutron number	158
Relative Atomic Mass	263,114987 ± 0,00018 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	29 ± 9 s
spin	9/2
nuclear quadrupole moment
time of discovery or invention	1992
parity	+

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

²⁶⁴Db

mass number	264
neutron number	159
Relative Atomic Mass	264,117297 ± 0,000253 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention
parity

decay mode	intensity
α (α emission)

²⁶⁵Db

mass number	265
neutron number	160
Relative Atomic Mass	265,1185 ± 0,00024 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	9/2
nuclear quadrupole moment
time of discovery or invention
parity	+

decay mode	intensity
α (α emission)

²⁶⁶Db

mass number	266
neutron number	161
Relative Atomic Mass	266,121032 ± 0,000304 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	80 ± 70 m
spin
nuclear quadrupole moment
time of discovery or invention	2007
parity

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

²⁶⁷Db

mass number	267
neutron number	162
Relative Atomic Mass	267,122399 ± 0,000402 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	2 ± 1,1 h
spin	9/2
nuclear quadrupole moment
time of discovery or invention	2004
parity	+

decay mode	intensity
SF (spontaneous fission)	100%

²⁶⁸Db

mass number	268
neutron number	163
Relative Atomic Mass	268,125669 ± 0,000568 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	29 ± 3 h
spin
nuclear quadrupole moment
time of discovery or invention	2004
parity

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

²⁶⁹Db

mass number	269
neutron number	164
Relative Atomic Mass	269,127911 ± 0,000669 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	9/2
nuclear quadrupole moment
time of discovery or invention
parity	+

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

²⁷⁰Db

mass number	270
neutron number	165
Relative Atomic Mass	270,131399 ± 0,000617 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,7 ± 1 h
spin
nuclear quadrupole moment
time of discovery or invention	2010
parity

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

lisoló

discoverer or inventor	A. Ghiorso, et al
location of discovery	United States
time of discovery or invention	1970
etymology	Named after the city of Dubna, the site of the JINR.
pronunciation	HA-ni-em (lingɛlɛ́sa)

source

Abundance
Abundance in Earth's crust
natural abundance (ocean)
natural abundance (human body)	0 %
natural abundance (meteoroid)	0 %
natural abundance (Mói)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Dubenu on ChemicalAid

dubnium

Australian Educational Vocabulary ID	scot/3514
CAS Registry Number	53850-35-4
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
GND ID	4293095-9
Gran Enciclopèdia Catalana ID	0272492
Great Russian Encyclopedia Online ID	1969523
KBpedia ID	Dubnium
NKCR AUT ID	ph928215
OmegaWiki Defined Meaning	157650
Store norske leksikon ID	dubnium
Treccani ID	dubnio
USGS Thesaurus ID	1442

Dubenu (Db)

Physical Property

Chemical Property

other

Isotopes of Dubnium

255Db

256Db

257Db

258Db

259Db

260Db

261Db

262Db

263Db

264Db

265Db

266Db

267Db

268Db

269Db

270Db

lisoló

source

Nuclear Screening Constants

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²⁶¹Db

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²⁶⁵Db

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²⁷⁰Db