Dubnium (Db)

chemical element with the atomic number of 105

Atomic Number	105
Atomic Weight	268
massiarv	255

Group	5
Period	7
Block	d

prooton	105 p⁺
neutron	150 n⁰
elektron	105 e^-

Animated Bohri aatomiteooria of Db (Dubnium)

Füüsikalised Omadused

Aatomiraadius
molaarruumala
Covalent Radius	149 pm 136 pm 126 pm
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
density	29,3 g/cm³

Keemilised Omadused

energia

proton affinity
Elektronafiinsus
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

aurustumissoojus
sulamissoojus
standard enthalpy of formation
elektron

elektronkiht	2, 8, 18, 32, 32, 11, 2

valentselektron	2 ⓘ

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

oksüdatsiooniaste	5
elektronegatiivsus
Electrophilicity Index
fundamental state of matter

phase of matter	Solid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
kolmikpunkt
Välimus
värvus	Colorless #d1004f
Välimus
Murdumisnäitaja
thermodynamic material property
Thermal Conductivity
soojuspaisumine
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Elektrijuhtivus
Eritakistus
Ülijuhtivus
Magnetism
type
Magnetiline vastuvõtlikkus (Mass)
Magnetiline vastuvõtlikkus (Molar)
Magnetiline vastuvõtlikkus (Volume)
magnetic ordering
Curie punkt
Néel temperature
struktuur
Crystal Structure	()
lattice constant
Lattice Angles
mechanical property
kõvadus
Ruumpaisumismoodul
Nihkeelastsusmoodul
Normaalelastsusmoodul
Poissoni tegur
heli kiirus
Klassifitseerimine
Category	Transition metals, Transition metals
CAS Group	VA
IUPAC Group	VB
Glawe Number
Mendeleev Number	50
Pettifor Number
Geochemical Class
Goldschmidt classification	synthetic

teine

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

Isotopes of Dubnium

Stable Isotopes	0
Unstable Isotopes	16
Natural Isotopes	0

²⁵⁵Db

massiarv	255
neutron number	150
Relative Atomic Mass	255,106919 ± 0,000304 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	54 ms
spinn	9/2
nuclear quadrupole moment
avastamise aeg	1976
parity	+

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

²⁵⁶Db

massiarv	256
neutron number	151
Relative Atomic Mass	256,107674 ± 0,000201 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	1,7 ± 0,4 s
spinn	9
nuclear quadrupole moment
avastamise aeg	2001
parity	-

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

²⁵⁷Db

massiarv	257
neutron number	152
Relative Atomic Mass	257,107520042 ± 0,000176741 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	2,3 ± 0,2 s
spinn	9/2
nuclear quadrupole moment
avastamise aeg	1985
parity	+

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

²⁵⁸Db

massiarv	258
neutron number	153
Relative Atomic Mass	258,108972995 ± 0,000098613 Da
g-factor	0
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	2,17 ± 0,36 s
spinn	0
nuclear quadrupole moment	0
avastamise aeg	1985
parity	-

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

²⁵⁹Db

massiarv	259
neutron number	154
Relative Atomic Mass	259,109491859 ± 0,000060854 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	510 ± 160 ms
spinn	9/2
nuclear quadrupole moment
avastamise aeg	2001
parity	+

decay mode	Intensiivsus
α (α emission)	100%

²⁶⁰Db

massiarv	260
neutron number	155
Relative Atomic Mass	260,111297 ± 0,0001 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	1,52 ± 0,13 s
spinn
nuclear quadrupole moment
avastamise aeg	1970
parity

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

²⁶¹Db

massiarv	261
neutron number	156
Relative Atomic Mass	261,111979 ± 0,000118 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	4,7 ± 1 s
spinn	9/2
nuclear quadrupole moment
avastamise aeg	1970
parity	+

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

²⁶²Db

massiarv	262
neutron number	157
Relative Atomic Mass	262,114067 ± 0,000154 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	34 ± 4 s
spinn
nuclear quadrupole moment
avastamise aeg	1971
parity

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

²⁶³Db

massiarv	263
neutron number	158
Relative Atomic Mass	263,114987 ± 0,00018 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	29 ± 9 s
spinn	9/2
nuclear quadrupole moment
avastamise aeg	1992
parity	+

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

²⁶⁴Db

massiarv	264
neutron number	159
Relative Atomic Mass	264,117297 ± 0,000253 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg
spinn
nuclear quadrupole moment
avastamise aeg
parity

decay mode	Intensiivsus
α (α emission)

²⁶⁵Db

massiarv	265
neutron number	160
Relative Atomic Mass	265,1185 ± 0,00024 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg
spinn	9/2
nuclear quadrupole moment
avastamise aeg
parity	+

decay mode	Intensiivsus
α (α emission)

²⁶⁶Db

massiarv	266
neutron number	161
Relative Atomic Mass	266,121032 ± 0,000304 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	80 ± 70 m
spinn
nuclear quadrupole moment
avastamise aeg	2007
parity

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

²⁶⁷Db

massiarv	267
neutron number	162
Relative Atomic Mass	267,122399 ± 0,000402 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	2 ± 1,1 h
spinn	9/2
nuclear quadrupole moment
avastamise aeg	2004
parity	+

decay mode	Intensiivsus
SF (spontaneous fission)	100%

²⁶⁸Db

massiarv	268
neutron number	163
Relative Atomic Mass	268,125669 ± 0,000568 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	29 ± 3 h
spinn
nuclear quadrupole moment
avastamise aeg	2004
parity

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

²⁶⁹Db

massiarv	269
neutron number	164
Relative Atomic Mass	269,127911 ± 0,000669 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg
spinn	9/2
nuclear quadrupole moment
avastamise aeg
parity	+

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

²⁷⁰Db

massiarv	270
neutron number	165
Relative Atomic Mass	270,131399 ± 0,000617 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	1,7 ± 1 h
spinn
nuclear quadrupole moment
avastamise aeg	2010
parity

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

ajalugu

leiutaja või avastaja	A. Ghiorso, et al
location of discovery	United States
avastamise aeg	1970
etümoloogia	Named after the city of Dubna, the site of the JINR.
pronunciation	HA-ni-em (inglise)

allikas

Abundance
Abundance in Earth's crust
natural abundance (ookean)
natural abundance (Inimkeha)	0 %
natural abundance (meteoorkeha)	0 %
natural abundance (Päike)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Dubnium 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	/m/0274b33
GND	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

Dubnium (Db)

Füüsikalised Omadused

Keemilised Omadused

teine

Isotopes of Dubnium

255Db

256Db

257Db

258Db

259Db

260Db

261Db

262Db

263Db

264Db

265Db

266Db

267Db

268Db

269Db

270Db

ajalugu

allikas

Nuclear Screening Constants

²⁵⁵Db

²⁵⁶Db

²⁵⁷Db

²⁵⁸Db

²⁵⁹Db

²⁶⁰Db

²⁶¹Db

²⁶²Db

²⁶³Db

²⁶⁴Db

²⁶⁵Db

²⁶⁶Db

²⁶⁷Db

²⁶⁸Db

²⁶⁹Db

²⁷⁰Db