Dubnij[um]

Dubnij[um] (Db)

hemijski element sa simbolom Db i atomskim brojem 105
Atomic Number105
Atomic Weight268
Maseni broj255
Group5
Period7
Blockd
Proton105 p+
Neutron150 n0
Elektron105 e-
Animated Bohrov model atoma of Db (Dubnij[um])

Physical Property

Atomski Radijus
Molarni volumen
covalent radius
149 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
ionization energy of Db (Dubnij[um])
Toplota isparavanja
toplota topljenja
standard enthalpy of formation
Elektron
electron shell2, 8, 18, 32, 32, 11, 2
Bohrov model atoma: Db (Dubnij[um])
Valentni elektron2
Lewis structure: Db (Dubnij[um])
electron configuration[Rn] 5f14 6d3 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f14 6d3 7s2
Enhanced Bohrov model atoma of Db (Dubnij[um])
Orbital Diagram of Db (Dubnij[um])
oksidacijsko stanje5
Elektronegativnost
Electrophilicity Index
fundamental state of matter
agregatno stanjeSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
Kritična temperatura
Trojna tačka
appearance
boja
Colorless
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
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
Kvantni brojevi4F3/2
space group ()

Isotopes of Dubnium

Stable Isotopes0
Unstable Isotopes16
Natural Isotopes0

255Db

Maseni broj255
broj neutrona150
relative atomic mass
255,106919 ± 0,000304 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
54 ms
spin9/2
nuclear quadrupole moment
datum otkrića1976
parity+

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

256Db

Maseni broj256
broj neutrona151
relative atomic mass
256,107674 ± 0,000201 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,7 ± 0,4 s
spin9
nuclear quadrupole moment
datum otkrića2001
parity-

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

257Db

Maseni broj257
broj neutrona152
relative atomic mass
257,107520042 ± 0,000176741 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,3 ± 0,2 s
spin9/2
nuclear quadrupole moment
datum otkrića1985
parity+

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

258Db

Maseni broj258
broj neutrona153
relative atomic mass
258,108972995 ± 0,000098613 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,17 ± 0,36 s
spin0
nuclear quadrupole moment
0
datum otkrića1985
parity-

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

259Db

Maseni broj259
broj neutrona154
relative atomic mass
259,109491859 ± 0,000060854 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
510 ± 160 ms
spin9/2
nuclear quadrupole moment
datum otkrića2001
parity+

decay modeintensity
α (α emission)100%

260Db

Maseni broj260
broj neutrona155
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 otkrića1970
parity

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

261Db

Maseni broj261
broj neutrona156
relative atomic mass
261,111979 ± 0,000118 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4,7 ± 1 s
spin9/2
nuclear quadrupole moment
datum otkrića1970
parity+

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

262Db

Maseni broj262
broj neutrona157
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 otkrića1971
parity

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

263Db

Maseni broj263
broj neutrona158
relative atomic mass
263,114987 ± 0,00018 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
29 ± 9 s
spin9/2
nuclear quadrupole moment
datum otkrića1992
parity+

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

264Db

Maseni broj264
broj neutrona159
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 modeintensity
α (α emission)

265Db

Maseni broj265
broj neutrona160
relative atomic mass
265,1185 ± 0,00024 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin9/2
nuclear quadrupole moment
datum otkrića
parity+

decay modeintensity
α (α emission)

266Db

Maseni broj266
broj neutrona161
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 otkrića2007
parity

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

267Db

Maseni broj267
broj neutrona162
relative atomic mass
267,122399 ± 0,000402 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2 ± 1,1 h
spin9/2
nuclear quadrupole moment
datum otkrića2004
parity+

decay modeintensity
SF (spontaneous fission)100%

268Db

Maseni broj268
broj neutrona163
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 otkrića2004
parity

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

269Db

Maseni broj269
broj neutrona164
relative atomic mass
269,127911 ± 0,000669 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin9/2
nuclear quadrupole moment
datum otkrića
parity+

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

270Db

Maseni broj270
broj neutrona165
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 otkrića2010
parity

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

historija

otkrivač ili izumiteljA. Ghiorso, et al
mjesto otkrićaUnited States
datum otkrića1970
EtimologijaNamed after the city of Dubna, the site of the JINR.
pronunciationHA-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