Berkelyûm

Berkelyûm (Bk)

element with the atomic number of 97
Atomic Number97
Atomic Weight247
Hejmara baristeyî233
Group
Period7
Blockf
Proton97 p+
Notron136 n0
Kareva97 e-
Animated Bohr model of Bk (Berkelyûm)

Physical Property

Atomic Radius
molar volume
Covalent Radius
168 pm
Metallic Radius
ionic radius
96 pm
Crystal Radius
110 pm
Van der Waals radius
244 pm
density
14,78 g/cm³

Chemical Property

wize
proton affinity
electron affinity
ionization energy
ionization energy of Bk (Berkelyûm)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
310 kJ/mol
Kareva
electron shell2, 8, 18, 32, 27, 8, 2
Bohr model: Bk (Berkelyûm)
valence electron2
Lewis structure: Bk (Berkelyûm)
electron configuration[Rn] 5f9 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f9 7s2
Enhanced Bohr model of Bk (Berkelyûm)
Orbital Diagram of Bk (Berkelyûm)
oxidation number2, 3, 4, 5
electronegativity
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
1.259,15 K
critical pressure
critical temperature
triple point
appearance
color
Colorless
appearancesilvery
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
electrical conductivity
electrical resistivity
superconductivity
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Germahiya Curie
Néel temperature
pêkhate
Crystal StructureSimple Hexagonal ()
lattice constant
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Leza dengê
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number41
Mendeleev Number30
Pettifor Number40
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
125 ± 25 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
710
Neutron Mass Absorption
quantum number6H15/2
space group194 (P63/mmc)

Isotopes of Berkelium

Stable Isotopes0
Unstable Isotopes22
Natural Isotopes0

233Bk

Hejmara baristeyî233
neutron number136
Giraniya atomê
233,056652 ± 0,00025 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
40 ± 30 s
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2015
parity-

decay modeintensity
α (α emission)82%
β+ (β+ decay; β+ = ϵ + e+)

234Bk

Hejmara baristeyî234
neutron number137
Giraniya atomê
234,057322 ± 0,000164 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
20 ± 5 s
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê2003
parity-

decay modeintensity
α (α emission)80%
β+ (β+ decay; β+ = ϵ + e+)20%

235Bk

Hejmara baristeyî235
neutron number138
Giraniya atomê
235,056651 ± 0,00043 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity-

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

236Bk

Hejmara baristeyî236
neutron number139
Giraniya atomê
236,057479 ± 0,000387 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
26 ± 10 s
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê2017
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)
β+ SF (β+-delayed fission)0.04%

237Bk

Hejmara baristeyî237
neutron number140
Giraniya atomê
237,057123 ± 0,000247 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity-

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

238Bk

Hejmara baristeyî238
neutron number141
Giraniya atomê
238,058204 ± 0,000275 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,4 ± 0,08 m
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1994
parity

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)
β+ SF (β+-delayed fission)0.048%

239Bk

Hejmara baristeyî239
neutron number142
Giraniya atomê
239,058239 ± 0,000222 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1989
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.01%
SF (spontaneous fission)0.01%

240Bk

Hejmara baristeyî240
neutron number143
Giraniya atomê
240,059758 ± 0,000161 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,8 ± 0,8 m
spin7
nuclear quadrupole moment
dema îcadkirinê yan keşfê1980
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)
β+ SF (β+-delayed fission)0.002%

241Bk

Hejmara baristeyî241
neutron number144
Giraniya atomê
241,060098 ± 0,000178 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,6 ± 0,4 m
spin7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2003
parity+

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

242Bk

Hejmara baristeyî242
neutron number145
Giraniya atomê
242,061999 ± 0,000144 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
7 ± 1,3 m
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê1972
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ SF (β+-delayed fission)3%
α (α emission)

243Bk

Hejmara baristeyî243
neutron number146
Giraniya atomê
243,063005905 ± 0,000004856 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,6 ± 0,2 h
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1950
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.15%

244Bk

Hejmara baristeyî244
neutron number147
Giraniya atomê
244,065178969 ± 0,000015457 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5,02 ± 0,03 h
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê1972
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)0.006%

245Bk

Hejmara baristeyî245
neutron number148
Giraniya atomê
245,066359814 ± 0,000001923 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,95 ± 0,03 d
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1951
parity-

decay modeintensity
ϵ (electron capture)99.88%
α (α emission)0.12%

246Bk

Hejmara baristeyî246
neutron number149
Giraniya atomê
246,0686713 ± 0,000064433 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,8 ± 0,02 d
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1954
parity

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

247Bk

Hejmara baristeyî247
neutron number150
Giraniya atomê
247,070305889 ± 0,00000557 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,38 ± 0,25 ky
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1965
parity-

decay modeintensity
α (α emission)100%
SF (spontaneous fission)

248Bk

Hejmara baristeyî248
neutron number151
Giraniya atomê
248,073141689 ± 0,000053739 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin6
nuclear quadrupole moment
dema îcadkirinê yan keşfê1956
parity+

decay modeintensity
α (α emission)
ϵ (electron capture)

249Bk

Hejmara baristeyî249
neutron number152
Giraniya atomê
249,074983118 ± 0,000001339 Da
g-factor
0,57142857142857 ± 0,11428571428571
natural abundance
radioactivity☢️ radioactive element
half-life
327,2 ± 0,3 d
spin7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1954
parity+

decay modeintensity
β (β decay)100%
α (α emission)0.00145%
SF (spontaneous fission)47%

250Bk

Hejmara baristeyî250
neutron number153
Giraniya atomê
250,078317195 ± 0,00000311 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,212 ± 0,005 h
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1954
parity-

decay modeintensity
β (β decay)100%

251Bk

Hejmara baristeyî251
neutron number154
Giraniya atomê
251,080760555 ± 0,000011523 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
55,6 ± 1,1 m
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1967
parity-

decay modeintensity
β (β decay)100%

252Bk

Hejmara baristeyî252
neutron number155
Giraniya atomê
252,08431 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,8 ± 0,5 m
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê1988
parity

decay modeintensity
β (β decay)
α (α emission)

253Bk

Hejmara baristeyî253
neutron number156
Giraniya atomê
253,08688 ± 0,000385 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1991
parity-

decay modeintensity
β (β decay)

254Bk

Hejmara baristeyî254
neutron number157
Giraniya atomê
254,0906 ± 0,00032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity

decay modeintensity
β (β decay)
Berkelium metal

dîrok

kaşîf an îcadkerG.T.Seaborg, S.G.Tompson, A.Ghiorso
location of discoveryUnited States
dema îcadkirinê yan keşfê1949
BêjenasîNamed after Berkeley, California the city of its discovery.
pronunciationBURK-li-em (îngilîzî)

source

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

Nuclear Screening Constants