Дубний (Db)

chemical element with the atomic number of 105

Atomic Number	105
Atomic Weight	268
Адади массавӣ	255

Group	5
Period	7
Block	d

proton	105 p⁺
neutron	150 n⁰
electron	105 e^-

Хусусияти Физикӣ

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

Chemical Property

{ERROR}

энергия

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
гармои гудозиш
standard enthalpy of formation
electron

Абри электронӣ	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
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
appearance
Ранг	Black #d1004f
appearance
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
навъ
electrical conductivity
electrical resistivity
superconductivity
magnetism
навъ
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
сохт
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	Actinides, 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
ададҳои квантӣ	4F3/2
space group	()

Isotopes of Dubnium

Stable Isotopes	0
Unstable Isotopes	16
Natural Isotopes	0

²⁵⁵Db

Адади массавӣ	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
таърихи кашф	1976
parity	+

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

²⁵⁶Db

Адади массавӣ	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
таърихи кашф	2001
parity	-

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

²⁵⁷Db

Адади массавӣ	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
таърихи кашф	1985
parity	+

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

²⁵⁸Db

Адади массавӣ	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
таърихи кашф	1985
parity	-

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

²⁵⁹Db

Адади массавӣ	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
таърихи кашф	2001
parity	+

decay mode	intensity
α (α emission)	100%

²⁶⁰Db

Адади массавӣ	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
таърихи кашф	1970
parity

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

²⁶¹Db

Адади массавӣ	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
таърихи кашф	1970
parity	+

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

²⁶²Db

Адади массавӣ	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
таърихи кашф	1971
parity

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

²⁶³Db

Адади массавӣ	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
таърихи кашф	1992
parity	+

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

²⁶⁴Db

Адади массавӣ	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
таърихи кашф
parity

decay mode	intensity
α (α emission)

²⁶⁵Db

Адади массавӣ	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
таърихи кашф
parity	+

decay mode	intensity
α (α emission)

²⁶⁶Db

Адади массавӣ	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
таърихи кашф	2007
parity

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

²⁶⁷Db

Адади массавӣ	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
таърихи кашф	2004
parity	+

decay mode	intensity
SF (spontaneous fission)	100%

²⁶⁸Db

Адади массавӣ	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
таърихи кашф	2004
parity

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

²⁶⁹Db

Адади массавӣ	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
таърихи кашф
parity	+

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

²⁷⁰Db

Адади массавӣ	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
таърихи кашф	2010
parity

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

таърих

кошиф	A. Ghiorso, et al
макони кашф	United States
таърихи кашф	1970
Решашиносӣ	Named after the city of Dubna, the site of the JINR.
pronunciation	HA-ni-em (Англисӣ)

source

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

Nuclear Screening Constants

Дубний on ChemicalAid

Дубний (Db)

Хусусияти Физикӣ

Chemical Property

other

Isotopes of Dubnium

255Db

256Db

257Db

258Db

259Db

260Db

261Db

262Db

263Db

264Db

265Db

266Db

267Db

268Db

269Db

270Db

таърих

source

Nuclear Screening Constants

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