Kalifornium

Kalifornium (Cf)

chemical element with the atomic number of 98
Atomic Number98
Atomic Weight251
Massagetal237
Group
Period7
Blockf
proton98 p+
neutron139 n0
elektron98 e-
Animated Bohr model of Cf (Kalifornium)

Physical Property

Atoomradius
molar volume
Covalent Radius
Metallic Radius
Ioonradius
Crystal Radius
Van der Waals radius
density

Chemical Property

energie
proton affinity
electron affinity
ionization energy
ionization energy of Cf (Kalifornium)
Verdampingswarmte
smeltingswarmte
Vormingsentalpie
elektron
Elektronskil2, 8, 18, 32, 28, 8, 2
Bohr model: Cf (Kalifornium)
Valenselektrone2
Lewisteorie: Cf (Kalifornium)
elektronkonfigurasie[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 (Kalifornium)
Orbital Diagram of Cf (Kalifornium)
Oksidasietoestand2, 3, 4, 5
Elektronegatiwiteit
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
appearance
kleur
Colorless
appearancesilvery
Brekingsindeks
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Geleidingsvermoë
Elektriese resistiwiteit
superconductivity
Magnetisme
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal StructureSimple Hexagonal ()
lattice constant
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
Massamodulus
Skuifmodulus
Young se modulus
Poisson se verhouding
Spoed van klank
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number42
Mendeleev Number32
Pettifor Number39
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
C6 Dispersion Coefficient
allotrope
Neutron cross section
2 900
Neutron Mass Absorption
quantum number5I8
Ruimtegroep194 (P63/mmc)

Isotopes of Californium

Stable Isotopes0
Unstable Isotopes20
Natural Isotopes0

237Cf

Massagetal237
neutron number139
Relative Atomic Mass
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
0,8 ± 0,2 s
spin5/2
nuclear quadrupole moment
ontdekkingsdatum1995
parity+

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

238Cf

Massagetal238
neutron number140
Relative Atomic Mass
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
21,1 ± 1,3 ms
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1995
parity+

decay modeintensity
SF (spontaneous fission)97.5%
α (α emission)2.5%

239Cf

Massagetal239
neutron number141
Relative Atomic Mass
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
28 ± 2 s
spin5/2
nuclear quadrupole moment
ontdekkingsdatum1981
parity+

decay modeintensity
α (α emission)65%
β+ (β+ decay; β+ = ϵ + e+)

240Cf

Massagetal240
neutron number142
Relative Atomic Mass
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
40,3 ± 0,9 s
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1970
parity+

decay modeintensity
α (α emission)98.5%
SF (spontaneous fission)1.5%
β+ (β+ decay; β+ = ϵ + e+)

241Cf

Massagetal241
neutron number143
Relative Atomic Mass
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,35 ± 0,18 m
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1970
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)15%

242Cf

Massagetal242
neutron number144
Relative Atomic Mass
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
3,49 ± 0,15 m
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1967
parity+

decay modeintensity
α (α emission)61%
β+ (β+ decay; β+ = ϵ + e+)39%
SF (spontaneous fission)0.014%

243Cf

Massagetal243
neutron number145
Relative Atomic Mass
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
10,8 ± 0,3 m
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum1967
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)86%
α (α emission)14%

244Cf

Massagetal244
neutron number146
Relative Atomic Mass
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
19,5 ± 0,5 m
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1956
parity+

decay modeintensity
α (α emission)75%
ϵ (electron capture)25%

245Cf

Massagetal245
neutron number147
Relative Atomic Mass
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
45 ± 1,5 m
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum1956
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)64.7%
α (α emission)35.3%

246Cf

Massagetal246
neutron number148
Relative Atomic Mass
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
35,7 ± 0,5 h
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1951
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)2.4%
ϵ (electron capture)

247Cf

Massagetal247
neutron number149
Relative Atomic Mass
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
3,11 ± 0,03 h
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1954
parity+

decay modeintensity
ϵ (electron capture)99.965%
α (α emission)0.035%

248Cf

Massagetal248
neutron number150
Relative Atomic Mass
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
333,5 ± 2,8 d
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1954
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)0.0029%

249Cf

Massagetal249
neutron number151
Relative Atomic Mass
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
351 ± 2 y
spin9/2
nuclear quadrupole moment
ontdekkingsdatum1954
parity-

decay modeintensity
α (α emission)100%
SF (spontaneous fission)5%

250Cf

Massagetal250
neutron number152
Relative Atomic Mass
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
13,08 ± 0,09 y
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1954
parity+

decay modeintensity
α (α emission)99.923%
SF (spontaneous fission)0.077%

251Cf

Massagetal251
neutron number153
Relative Atomic Mass
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
898 ± 44 y
spin1/2
nuclear quadrupole moment
0
ontdekkingsdatum1954
parity+

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

252Cf

Massagetal252
neutron number154
Relative Atomic Mass
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
2,645 ± 0,008 y
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1954
parity+

decay modeintensity
α (α emission)96.8972%
SF (spontaneous fission)3.1028%

253Cf

Massagetal253
neutron number155
Relative Atomic Mass
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
17,81 ± 0,08 d
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1954
parity+

decay modeintensity
β (β decay)99.69%
α (α emission)0.31%

254Cf

Massagetal254
neutron number156
Relative Atomic Mass
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
60,5 ± 0,2 d
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1955
parity+

decay modeintensity
SF (spontaneous fission)99.69%
α (α emission)0.31%
(double β decay)

255Cf

Massagetal255
neutron number157
Relative Atomic Mass
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
85 ± 18 m
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1981
parity+

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

256Cf

Massagetal256
neutron number158
Relative Atomic Mass
g-factor
0
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
12,3 ± 1,2 m
spin0
nuclear quadrupole moment
0
ontdekkingsdatum1980
parity+

decay modeintensity
SF (spontaneous fission)100%
α (α emission)
(double β decay)
Californium

geskiedenis

Ontdek deurG.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr.
ligging van ontdekkingUnited States
ontdekkingsdatum1950
etimologieNamed after the state and University of California.
uitspraakkal-eh-FOR-ni-em (Engels)

source

Abundance
Abundance in Earth's crust
natural abundance (oseaan)
natural abundance (human body)
0 %
natural abundance (Meteoroïde)
0 %
natural abundance (Son)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants