Dubni

Dubni (Db)

chemical element with the atomic number of 105
Atomic Number105
Atomic Weight268
Rhif màs255
Group5
Period7
Blockd
Proton105 p+
Niwtron150 n0
Electron105 e-
Animated Bohr model of Db (Dubni)

Nodwedd Ffisegol

Atomic Radius
molar volume
covalent radius
149 pm
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
density
29.3 g/cm³

Nodwedd Gemegol

egni
proton affinity
electron affinity
ionization energy
ionization energy of Db (Dubni)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
Electron
plisgyn yr electron2, 8, 18, 32, 32, 11, 2
Bohr model: Db (Dubni)
valence electron2
Lewis structure: Db (Dubni)
trefn yr electronnau[Rn] 5f14 6d3 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f14 6d3 7s2
Enhanced Bohr model of Db (Dubni)
Orbital Diagram of Db (Dubni)
Cyflwr ocsidiad5
Electronegatifedd
Electrophilicity Index
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
appearance
lliw
Colorless
appearance
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
dargludedd trydanol
Gwrthedd
superconductivity
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
strwythur
Crystal Structure ()
lattice constant
Lattice Angles
nodwedd mecanyddol deunyddiau
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
classification
CategoryTransition metals, Transition metals
CAS GroupVA
IUPAC GroupVB
Glawe Number
Mendeleev Number50
Pettifor Number
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
42 ± 4 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
Neutron Mass Absorption
quantum number4F3/2
space group ()

Isotopes of Dubnium

Stable Isotopes0
Unstable Isotopes16
Natural Isotopes0

255Db

Rhif màs255
neutron number150
relative atomic mass
255.106919 ± 0.000304 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
54 ms
spin9/2
nuclear quadrupole moment
dyddiad darganfod1976
parity+

decay modeintensity
SF (spontaneous fission)67%
α (α emission)

256Db

Rhif màs256
neutron number151
relative atomic mass
256.107674 ± 0.000201 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.7 ± 0.4 s
spin9
nuclear quadrupole moment
dyddiad darganfod2001
parity-

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

257Db

Rhif màs257
neutron number152
relative atomic mass
257.107520042 ± 0.000176741 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.3 ± 0.2 s
spin9/2
nuclear quadrupole moment
dyddiad darganfod1985
parity+

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

258Db

Rhif màs258
neutron number153
relative atomic mass
258.108972995 ± 0.000098613 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.17 ± 0.36 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1985
parity-

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

259Db

Rhif màs259
neutron number154
relative atomic mass
259.109491859 ± 0.000060854 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
510 ± 160 ms
spin9/2
nuclear quadrupole moment
dyddiad darganfod2001
parity+

decay modeintensity
α (α emission)100%

260Db

Rhif màs260
neutron number155
relative atomic mass
260.111297 ± 0.0001 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.52 ± 0.13 s
spin
nuclear quadrupole moment
dyddiad darganfod1970
parity

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

261Db

Rhif màs261
neutron number156
relative atomic mass
261.111979 ± 0.000118 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.7 ± 1 s
spin9/2
nuclear quadrupole moment
dyddiad darganfod1970
parity+

decay modeintensity
SF (spontaneous fission)73%
α (α emission)27%

262Db

Rhif màs262
neutron number157
relative atomic mass
262.114067 ± 0.000154 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
34 ± 4 s
spin
nuclear quadrupole moment
dyddiad darganfod1971
parity

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

263Db

Rhif màs263
neutron number158
relative atomic mass
263.114987 ± 0.00018 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
29 ± 9 s
spin9/2
nuclear quadrupole moment
dyddiad darganfod1992
parity+

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

264Db

Rhif màs264
neutron number159
relative atomic mass
264.117297 ± 0.000253 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod
parity

decay modeintensity
α (α emission)

265Db

Rhif màs265
neutron number160
relative atomic mass
265.1185 ± 0.00024 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin9/2
nuclear quadrupole moment
dyddiad darganfod
parity+

decay modeintensity
α (α emission)

266Db

Rhif màs266
neutron number161
relative atomic mass
266.121032 ± 0.000304 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
80 ± 70 m
spin
nuclear quadrupole moment
dyddiad darganfod2007
parity

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

267Db

Rhif màs267
neutron number162
relative atomic mass
267.122399 ± 0.000402 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2 ± 1.1 h
spin9/2
nuclear quadrupole moment
dyddiad darganfod2004
parity+

decay modeintensity
SF (spontaneous fission)100%

268Db

Rhif màs268
neutron number163
relative atomic mass
268.125669 ± 0.000568 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
29 ± 3 h
spin
nuclear quadrupole moment
dyddiad darganfod2004
parity

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

269Db

Rhif màs269
neutron number164
relative atomic mass
269.127911 ± 0.000669 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin9/2
nuclear quadrupole moment
dyddiad darganfod
parity+

decay modeintensity
α (α emission)
SF (spontaneous fission)

270Db

Rhif màs270
neutron number165
relative atomic mass
270.131399 ± 0.000617 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.7 ± 1 h
spin
nuclear quadrupole moment
dyddiad darganfod2010
parity

decay modeintensity
SF (spontaneous fission)87%
α (α emission)13%
Electron shell 105 Dubnium

hanes

darganfyddwr neu ddyfeisiwrA. Ghiorso, et al
man darganfodUnited States
dyddiad darganfod1970
geirdarddiadNamed after the city of Dubna, the site of the JINR.
ynganiadHA-ni-em (Saesneg)

source

Abundance
Abundance in Earth's crust
natural abundance (cefnfor)
natural abundance (corff dynol)
0 %
natural abundance (Awyrfaen)
0 %
natural abundance (Haul)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants