Kalifornis

Kalifornis (Cf)

chemical element with the atomic number of 98
Atomic Number98
Atomic Weight251
mass number237
Group
Period7
Blockf
protonas98 p+
neutronas139 n0
elektronas98 e-
Animated Boro teorija of Cf (Kalifornis)

Fizikinė Ypatybė

Atomo Spindulys
molinis tūris
Kovalentinis spindulys
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
tankis

Chemical Property

energija
proton affinity
electron affinity
ionization energy
ionization energy of Cf (Kalifornis)
Garavimo šiluma
lydymosi šiluma
standard enthalpy of formation
elektronas
electron shell2, 8, 18, 32, 28, 8, 2
Boro teorija: Cf (Kalifornis)
Valentinis elektronas2
Lewis structure: Cf (Kalifornis)
elektronų konfigūracija[Rn] 5f10 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f10 7s2
Enhanced Boro teorija of Cf (Kalifornis)
Orbital Diagram of Cf (Kalifornis)
oksidacijos laipsnis2, 3, 4, 5
Elektroneigiamumas
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
appearance
spalva
Colorless
appearancesilvery
lūžio rodiklis
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Elektrinis laidumas
electrical resistivity
Superlaidumas
Magnetizmas
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
struktūra
Crystal StructureSimple Hexagonal ()
Gardelės konstanta
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
kietis
bulk modulus
shear modulus
Jungo modulis
Puasono santykis
garso greitis
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number42
Mendeleev Number32
Pettifor Number39
Geochemical Class
Goldšmito klasifikacijasynthetic

other

Gas Basicity
polarizability
C6 Dispersion Coefficient
allotrope
Neutron cross section
2 900
Neutron Mass Absorption
quantum number5I8
space group194 (P63/mmc)

Isotopes of Californium

Stable Isotopes0
Unstable Isotopes20
Natural Isotopes0

237Cf

mass number237
neutron number139
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
0,8 ± 0,2 s
Sukinys5/2
nuclear quadrupole moment
atradimo data1995
parity+

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

238Cf

mass number238
neutron number140
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
21,1 ± 1,3 ms
Sukinys0
nuclear quadrupole moment
0
atradimo data1995
parity+

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

239Cf

mass number239
neutron number141
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
28 ± 2 s
Sukinys5/2
nuclear quadrupole moment
atradimo data1981
parity+

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

240Cf

mass number240
neutron number142
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
40,3 ± 0,9 s
Sukinys0
nuclear quadrupole moment
0
atradimo data1970
parity+

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

241Cf

mass number241
neutron number143
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
2,35 ± 0,18 m
Sukinys7/2
nuclear quadrupole moment
atradimo data1970
parity-

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

242Cf

mass number242
neutron number144
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
3,49 ± 0,15 m
Sukinys0
nuclear quadrupole moment
0
atradimo data1967
parity+

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

243Cf

mass number243
neutron number145
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
10,8 ± 0,3 m
Sukinys1/2
nuclear quadrupole moment
0
atradimo data1967
parity+

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

244Cf

mass number244
neutron number146
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
19,5 ± 0,5 m
Sukinys0
nuclear quadrupole moment
0
atradimo data1956
parity+

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

245Cf

mass number245
neutron number147
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
45 ± 1,5 m
Sukinys1/2
nuclear quadrupole moment
0
atradimo data1956
parity+

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

246Cf

mass number246
neutron number148
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
35,7 ± 0,5 h
Sukinys0
nuclear quadrupole moment
0
atradimo data1951
parity+

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

247Cf

mass number247
neutron number149
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
3,11 ± 0,03 h
Sukinys7/2
nuclear quadrupole moment
atradimo data1954
parity+

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

248Cf

mass number248
neutron number150
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
333,5 ± 2,8 d
Sukinys0
nuclear quadrupole moment
0
atradimo data1954
parity+

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

249Cf

mass number249
neutron number151
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
351 ± 2 y
Sukinys9/2
nuclear quadrupole moment
atradimo data1954
parity-

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

250Cf

mass number250
neutron number152
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
13,08 ± 0,09 y
Sukinys0
nuclear quadrupole moment
0
atradimo data1954
parity+

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

251Cf

mass number251
neutron number153
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
898 ± 44 y
Sukinys1/2
nuclear quadrupole moment
0
atradimo data1954
parity+

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

252Cf

mass number252
neutron number154
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
2,645 ± 0,008 y
Sukinys0
nuclear quadrupole moment
0
atradimo data1954
parity+

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

253Cf

mass number253
neutron number155
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
17,81 ± 0,08 d
Sukinys7/2
nuclear quadrupole moment
atradimo data1954
parity+

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

254Cf

mass number254
neutron number156
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
60,5 ± 0,2 d
Sukinys0
nuclear quadrupole moment
0
atradimo data1955
parity+

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

255Cf

mass number255
neutron number157
Relative Atomic Mass
g-factor
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
85 ± 18 m
Sukinys7/2
nuclear quadrupole moment
atradimo data1981
parity+

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

256Cf

mass number256
neutron number158
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktyvumas☢️ radioactive element
pusėjimo trukmė
12,3 ± 1,2 m
Sukinys0
nuclear quadrupole moment
0
atradimo data1980
parity+

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

istorija

atradėjas arba išradėjasG.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr.
location of discoveryUnited States
atradimo data1950
EtimologijaNamed after the state and University of California.
pronunciationkal-eh-FOR-ni-em (anglų)

source

Abundance
Abundance in Earth's crust
natural abundance (Vandenynas)
natural abundance (Kūnas)
0 %
natural abundance (Meteoroidas)
0 %
natural abundance (Saulė)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants