Dubnij[um] (Db)

hemijski element sa simbolom Db i atomskim brojem 105

Atomic Number	105
Atomic Weight	268
Maseni broj	255

Group	5
Period	7
Block	d

Proton	105 p⁺
Neutron	150 n⁰
Elektron	105 e^-

Animated Bohrov model atoma of Db (Dubnij[um])

Physical Property

Atomski Radijus
Molarni volumen
covalent radius	149 pm 136 pm 126 pm
Metallic Radius
Ionski radijus
Crystal Radius
Van der Waalsov radijus
gustoća	29,3 g/cm³

Chemical Property

energija

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

Toplota isparavanja
toplota topljenja
standard enthalpy of formation
Elektron

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

Valentni elektron	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

oksidacijsko stanje	5
Elektronegativnost
Electrophilicity Index
fundamental state of matter

agregatno stanje	Solid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
Kritična temperatura
Trojna tačka
appearance
boja	Colorless #d1004f
appearance
Indeks prelamanja
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Specifična električna provodljivost
electrical resistivity
Superprovodljivost
Magnetizam
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Kirijeva tačka
Néel temperature
struktura
Crystal Structure	()
lattice constant
Lattice Angles
mechanical property
Tvrdoća
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Brzina zvuka
klasifikacija
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
Kvantni brojevi	4F3/2
space group	()

Isotopes of Dubnium

Stable Isotopes	0
Unstable Isotopes	16
Natural Isotopes	0

²⁵⁵Db

Maseni broj	255
broj neutrona	150
Relative Atomic Mass	255,106919 ± 0,000304 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	54 ms
spin	9/2
nuclear quadrupole moment
datum otkrića	1976
parity	+

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

²⁵⁶Db

Maseni broj	256
broj neutrona	151
Relative Atomic Mass	256,107674 ± 0,000201 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,7 ± 0,4 s
spin	9
nuclear quadrupole moment
datum otkrića	2001
parity	-

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

²⁵⁷Db

Maseni broj	257
broj neutrona	152
Relative Atomic Mass	257,107520042 ± 0,000176741 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,3 ± 0,2 s
spin	9/2
nuclear quadrupole moment
datum otkrića	1985
parity	+

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

²⁵⁸Db

Maseni broj	258
broj neutrona	153
Relative Atomic Mass	258,108972995 ± 0,000098613 Da
g-factor	0
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,17 ± 0,36 s
spin	0
nuclear quadrupole moment	0
datum otkrića	1985
parity	-

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

²⁵⁹Db

Maseni broj	259
broj neutrona	154
Relative Atomic Mass	259,109491859 ± 0,000060854 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	510 ± 160 ms
spin	9/2
nuclear quadrupole moment
datum otkrića	2001
parity	+

decay mode	intensity
α (α emission)	100%

²⁶⁰Db

Maseni broj	260
broj neutrona	155
Relative Atomic Mass	260,111297 ± 0,0001 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,52 ± 0,13 s
spin
nuclear quadrupole moment
datum otkrića	1970
parity

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

²⁶¹Db

Maseni broj	261
broj neutrona	156
Relative Atomic Mass	261,111979 ± 0,000118 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	4,7 ± 1 s
spin	9/2
nuclear quadrupole moment
datum otkrića	1970
parity	+

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

²⁶²Db

Maseni broj	262
broj neutrona	157
Relative Atomic Mass	262,114067 ± 0,000154 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	34 ± 4 s
spin
nuclear quadrupole moment
datum otkrića	1971
parity

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

²⁶³Db

Maseni broj	263
broj neutrona	158
Relative Atomic Mass	263,114987 ± 0,00018 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	29 ± 9 s
spin	9/2
nuclear quadrupole moment
datum otkrića	1992
parity	+

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

²⁶⁴Db

Maseni broj	264
broj neutrona	159
Relative Atomic Mass	264,117297 ± 0,000253 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin
nuclear quadrupole moment
datum otkrića
parity

decay mode	intensity
α (α emission)

²⁶⁵Db

Maseni broj	265
broj neutrona	160
Relative Atomic Mass	265,1185 ± 0,00024 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	9/2
nuclear quadrupole moment
datum otkrića
parity	+

decay mode	intensity
α (α emission)

²⁶⁶Db

Maseni broj	266
broj neutrona	161
Relative Atomic Mass	266,121032 ± 0,000304 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	80 ± 70 m
spin
nuclear quadrupole moment
datum otkrića	2007
parity

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

²⁶⁷Db

Maseni broj	267
broj neutrona	162
Relative Atomic Mass	267,122399 ± 0,000402 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2 ± 1,1 h
spin	9/2
nuclear quadrupole moment
datum otkrića	2004
parity	+

decay mode	intensity
SF (spontaneous fission)	100%

²⁶⁸Db

Maseni broj	268
broj neutrona	163
Relative Atomic Mass	268,125669 ± 0,000568 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	29 ± 3 h
spin
nuclear quadrupole moment
datum otkrića	2004
parity

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

²⁶⁹Db

Maseni broj	269
broj neutrona	164
Relative Atomic Mass	269,127911 ± 0,000669 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	9/2
nuclear quadrupole moment
datum otkrića
parity	+

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

²⁷⁰Db

Maseni broj	270
broj neutrona	165
Relative Atomic Mass	270,131399 ± 0,000617 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,7 ± 1 h
spin
nuclear quadrupole moment
datum otkrića	2010
parity

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

historija

otkrivač ili izumitelj	A. Ghiorso, et al
mjesto otkrića	United States
datum otkrića	1970
Etimologija	Named after the city of Dubna, the site of the JINR.
pronunciation	HA-ni-em (engleski)

izvor

Abundance
Abundance in Earth's crust
natural abundance (okean)
natural abundance (ljudsko tijelo)	0 %
natural abundance (Meteoroidi)	0 %
natural abundance (Sunce)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Dubnij[um] on ChemicalAid

Australian Educational Vocabulary ID	scot/3514
CAS broj	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
GND	4293095-9
Gran Enciclopèdia Catalana ID	0272492
Great Russian Encyclopedia Online ID	1969523
ID na KBpediji	Dubnium
NKC identifikator	ph928215
OmegaWiki određeno značenje	157650
Store norske leksikon ID	dubnium
Treccani ID	dubnio
USGS Thesaurus ID	1442
broj na Freebaseu	/m/0274b33

Dubnij[um] (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

historija

izvor

Nuclear Screening Constants

²⁵⁵Db

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²⁵⁷Db

²⁵⁸Db

²⁵⁹Db

²⁶⁰Db

²⁶¹Db

²⁶²Db

²⁶³Db

²⁶⁴Db

²⁶⁵Db

²⁶⁶Db

²⁶⁷Db

²⁶⁸Db

²⁶⁹Db

²⁷⁰Db