Dubnio (Db)

chemical element with the atomic number of 105

Atomic Number	105
Atomic Weight	268
Numero masico	255

Group	5
Period	7
Block	d

Protón	105 p⁺
Neutrón	150 n⁰
Electrón	105 e^-

Animated Modelo atomico de Bohr of Db (Dubnio)

Physical Property

Radio Atomico
molar volume
Radio covalent	149 pm 136 pm 126 pm
Metallic Radius
Radio ionico
Crystal Radius
Radio de van der Waals
density	29.3 g/cm³

Chemical Property

enerchía

proton affinity
Afinidat electronica
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 1022 eV/particle 1089 eV/particle 1126 eV/particle 1168 eV/particle 1207 eV/particle 3975 eV/particle 4057 eV/particle 4145 eV/particle 4237 eV/particle 4326 eV/particle 4411 eV/particle 4620 eV/particle 4710 eV/particle 4810 eV/particle 4900 eV/particle 5260 eV/particle 5350 eV/particle 5450 eV/particle 5530 eV/particle 6280 eV/particle 6380 eV/particle 6650 eV/particle 6760 eV/particle 10420 eV/particle 10610 eV/particle 10820 eV/particle 11040 eV/particle 11240 eV/particle 11440 eV/particle 12040 eV/particle 12250 eV/particle 12480 eV/particle 12700 eV/particle 13300 eV/particle 13500 eV/particle 13700 eV/particle 13900 eV/particle 16200 eV/particle 16400 eV/particle 16900 eV/particle 17100 eV/particle 33800 eV/particle 34300 eV/particle 34800 eV/particle 35300 eV/particle 43800 eV/particle 44500 eV/particle 45400 eV/particle 181444 eV/particle

Entalpía de vaporización
entalpía de fusión
standard enthalpy of formation
Electrón

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

Numero d'oxidación	5
Electronegatividat
Electrophilicity Index
fundamental state of matter

phase of matter	Solid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
Punto triple
appearance
Color	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	{ERROR}
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

Numero masico	255
neutron number	150
Relative Atomic Mass	255.106919 ± 0.000304 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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

Numero masico	256
neutron number	151
Relative Atomic Mass	256.107674 ± 0.000201 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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

Numero masico	257
neutron number	152
Relative Atomic Mass	257.107520042 ± 0.000176741 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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

Numero masico	258
neutron number	153
Relative Atomic Mass	258.108972995 ± 0.000098613 Da
g-factor	0
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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

Numero masico	259
neutron number	154
Relative Atomic Mass	259.109491859 ± 0.000060854 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	510 ± 160 ms
spin	9/2
nuclear quadrupole moment
time of discovery or invention	2001
parity	+

decay mode	intensity
α (α emission)	100%

²⁶⁰Db

Numero masico	260
neutron number	155
Relative Atomic Mass	260.111297 ± 0.0001 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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

Numero masico	261
neutron number	156
Relative Atomic Mass	261.111979 ± 0.000118 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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

Numero masico	262
neutron number	157
Relative Atomic Mass	262.114067 ± 0.000154 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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

Numero masico	263
neutron number	158
Relative Atomic Mass	263.114987 ± 0.00018 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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

Numero masico	264
neutron number	159
Relative Atomic Mass	264.117297 ± 0.000253 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración
spin
nuclear quadrupole moment
time of discovery or invention
parity

decay mode	intensity
α (α emission)

²⁶⁵Db

Numero masico	265
neutron number	160
Relative Atomic Mass	265.1185 ± 0.00024 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración
spin	9/2
nuclear quadrupole moment
time of discovery or invention
parity	+

decay mode	intensity
α (α emission)

²⁶⁶Db

Numero masico	266
neutron number	161
Relative Atomic Mass	266.121032 ± 0.000304 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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

Numero masico	267
neutron number	162
Relative Atomic Mass	267.122399 ± 0.000402 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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

Numero masico	268
neutron number	163
Relative Atomic Mass	268.125669 ± 0.000568 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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

Numero masico	269
neutron number	164
Relative Atomic Mass	269.127911 ± 0.000669 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración
spin	9/2
nuclear quadrupole moment
time of discovery or invention
parity	+

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

²⁷⁰Db

Numero masico	270
neutron number	165
Relative Atomic Mass	270.131399 ± 0.000617 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	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%

historia

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

source

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

Nuclear Screening Constants

Dubnio on ChemicalAid

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

Dubnio (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

historia

source

Nuclear Screening Constants

²⁵⁵Db

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²⁵⁸Db

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²⁶⁰Db

²⁶¹Db

²⁶²Db

²⁶³Db

²⁶⁴Db

²⁶⁵Db

²⁶⁶Db

²⁶⁷Db

²⁶⁸Db

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²⁷⁰Db