Калифорний

Калифорний (Cf)

chemical element with the atomic number of 98
Atomic Number98
Atomic Weight251
mass number237
Group
Period7
Blockf
Протон98 p+
Нейтрон139 n0
Электрон98 e-
Animated Bohr model of Cf (Калифорний)

Physical Property

Атомдук Радиус
molar volume
covalent radius
168 pm
Metallic Radius
ionic radius
95 pm
Crystal Radius
109 pm
Van der Waals radius
245 pm
density
15,1 g/cm³

Chemical Property

энергия
proton affinity
electron affinity
ionization energy
6,2817 eV/particle
ionization energy of Cf (Калифорний)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
196 kJ/mol
Электрон
electron shell2, 8, 18, 32, 28, 8, 2
Bohr model: Cf (Калифорний)
valence electron2 ⓘ
Lewis structure: Cf (Калифорний)
electron configuration[Rn] 5f10 7s2ⓘ
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f10 7s2
Enhanced Bohr model of Cf (Калифорний)
Orbital Diagram of Cf (Калифорний)
oxidation number2, 3, 4, 5
electronegativity
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
1 173,15 K
critical pressure
critical temperature
triple point
appearance
Түс –
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
Магнетизм
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
түзүм
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
speed of sound
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number42
Mendeleev Number32
Pettifor Number39
Geochemical Class
Литофиль элементтериsynthetic

other

Gas Basicity
polarizability
122 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
2 900
Neutron Mass Absorption
Кванттык сандар5I8
space group194 (P63/mmc)

Isotopes of Californium

Stable Isotopes0
Unstable Isotopes20
Natural Isotopes0

237Cf

mass number237
neutron number139
relative atomic mass
237,062199272 ± 0,000104506 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
0,8 ± 0,2 s
Спин5/2
nuclear quadrupole moment
time of discovery or invention1995
parity+
decay modeintensity
α (α emission)70%
SF (spontaneous fission)30%
β+ (β+ decay; β+ = ϵ + e+)

238Cf

mass number238
neutron number140
relative atomic mass
238,06149 ± 0,00032 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
21,1 ± 1,3 ms
Спин0
nuclear quadrupole moment
0
time of discovery or invention1995
parity+
decay modeintensity
SF (spontaneous fission)97.5%
α (α emission)2.5%

239Cf

mass number239
neutron number141
relative atomic mass
239,062482 ± 0,000129 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
28 ± 2 s
Спин5/2
nuclear quadrupole moment
time of discovery or invention1981
parity+
decay modeintensity
α (α emission)65%
β+ (β+ decay; β+ = ϵ + e+)

240Cf

mass number240
neutron number142
relative atomic mass
240,062253447 ± 0,00001936 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
40,3 ± 0,9 s
Спин0
nuclear quadrupole moment
0
time of discovery or invention1970
parity+
decay modeintensity
α (α emission)98.5%
SF (spontaneous fission)1.5%
β+ (β+ decay; β+ = ϵ + e+)

241Cf

mass number241
neutron number143
relative atomic mass
241,06369 ± 0,00018 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
2,35 ± 0,18 m
Спин7/2
nuclear quadrupole moment
time of discovery or invention1970
parity-
decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)15%

242Cf

mass number242
neutron number144
relative atomic mass
242,063754544 ± 0,00001384 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
3,49 ± 0,15 m
Спин0
nuclear quadrupole moment
0
time of discovery or invention1967
parity+
decay modeintensity
α (α emission)61%
β+ (β+ decay; β+ = ϵ + e+)39%
SF (spontaneous fission)0.014%

243Cf

mass number243
neutron number145
relative atomic mass
243,065475 ± 0,000194 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
10,8 ± 0,3 m
Спин1/2
nuclear quadrupole moment
0
time of discovery or invention1967
parity+
decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)86%
α (α emission)14%

244Cf

mass number244
neutron number146
relative atomic mass
244,065999447 ± 0,000002809 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
19,5 ± 0,5 m
Спин0
nuclear quadrupole moment
0
time of discovery or invention1956
parity+
decay modeintensity
α (α emission)75%
ϵ (electron capture)25%

245Cf

mass number245
neutron number147
relative atomic mass
245,068046755 ± 0,000002606 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
45 ± 1,5 m
Спин1/2
nuclear quadrupole moment
0
time of discovery or invention1956
parity+
decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)64.7%
α (α emission)35.3%

246Cf

mass number246
neutron number148
relative atomic mass
246,068803685 ± 0,000001625 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
35,7 ± 0,5 h
Спин0
nuclear quadrupole moment
0
time of discovery or invention1951
parity+
decay modeintensity
α (α emission)100%
SF (spontaneous fission)2.4%
ϵ (electron capture)

247Cf

mass number247
neutron number149
relative atomic mass
247,070971348 ± 0,00001538 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
3,11 ± 0,03 h
Спин7/2
nuclear quadrupole moment
time of discovery or invention1954
parity+
decay modeintensity
ϵ (electron capture)99.965%
α (α emission)0.035%

248Cf

mass number248
neutron number150
relative atomic mass
248,072182905 ± 0,000005497 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
333,5 ± 2,8 d
Спин0
nuclear quadrupole moment
0
time of discovery or invention1954
parity+
decay modeintensity
α (α emission)100%
SF (spontaneous fission)0.0029%

249Cf

mass number249
neutron number151
relative atomic mass
249,074850428 ± 0,000001269 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
351 ± 2 y
Спин9/2
nuclear quadrupole moment
time of discovery or invention1954
parity-
decay modeintensity
α (α emission)100%
SF (spontaneous fission)5%

250Cf

mass number250
neutron number152
relative atomic mass
250,076404494 ± 0,00000165 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
13,08 ± 0,09 y
Спин0
nuclear quadrupole moment
0
time of discovery or invention1954
parity+
decay modeintensity
α (α emission)99.923%
SF (spontaneous fission)0.077%

251Cf

mass number251
neutron number153
relative atomic mass
251,079587171 ± 0,000004187 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
898 ± 44 y
Спин1/2
nuclear quadrupole moment
0
time of discovery or invention1954
parity+
decay modeintensity
α (α emission)100%
SF (spontaneous fission)

252Cf

mass number252
neutron number154
relative atomic mass
252,081626507 ± 0,000002531 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
2,645 ± 0,008 y
Спин0
nuclear quadrupole moment
0
time of discovery or invention1954
parity+
decay modeintensity
α (α emission)96.8972%
SF (spontaneous fission)3.1028%

253Cf

mass number253
neutron number155
relative atomic mass
253,085133723 ± 0,00000457 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
17,81 ± 0,08 d
Спин7/2
nuclear quadrupole moment
time of discovery or invention1954
parity+
decay modeintensity
β− (β− decay)99.69%
α (α emission)0.31%

254Cf

mass number254
neutron number156
relative atomic mass
254,087323575 ± 0,000012304 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
60,5 ± 0,2 d
Спин0
nuclear quadrupole moment
0
time of discovery or invention1955
parity+
decay modeintensity
SF (spontaneous fission)99.69%
α (α emission)0.31%
2β− (double β− decay)

255Cf

mass number255
neutron number157
relative atomic mass
255,091046 ± 0,000215 Da
g-factor
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
85 ± 18 m
Спин7/2
nuclear quadrupole moment
time of discovery or invention1981
parity+
decay modeintensity
β− (β− decay)100%
SF (spontaneous fission)
α (α emission)

256Cf

mass number256
neutron number158
relative atomic mass
256,093442 ± 0,000338 Da
g-factor
0
natural abundance
Радиоактивдүүлүк☢️ Радиоактивдүү элементтер —
half-life
12,3 ± 1,2 m
Спин0
nuclear quadrupole moment
0
time of discovery or invention1980
parity+
decay modeintensity
SF (spontaneous fission)100%
α (α emission)
2β− (double β− decay)
Californium

тарых

discoverer or inventorG.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr.
location of discoveryUnited States
time of discovery or invention1950
ЭтимологияNamed after the state and University of California.
pronunciationkal-eh-FOR-ni-em (англисче)

source

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

Nuclear Screening Constants

Калифорний on ChemicalAid