Californij[um]

Californij[um] (Cf)

hemijski element sa simbolom Cf i atomskim brojem 98
Atomic Number98
Atomic Weight251
Maseni broj237
Group
Period7
Blockf
Proton98 p+
Neutron139 n0
Elektron98 e-
Animated Bohrov model atoma of Cf (Californij[um])

Physical Property

Atomski Radijus
Molarni volumen
covalent radius
168 pm
Metallic Radius
Ionski radijus
95 pm
Crystal Radius
109 pm
Van der Waalsov radijus
245 pm
gustoća
15,1 g/cm³

Chemical Property

energija
proton affinity
electron affinity
ionization energy
ionization energy of Cf (Californij[um])
Toplota isparavanja
toplota topljenja
standard enthalpy of formation
196 kJ/mol
Elektron
electron shell2, 8, 18, 32, 28, 8, 2
Bohrov model atoma: Cf (Californij[um])
Valentni elektron2
Lewis structure: Cf (Californij[um])
electron configuration[Rn] 5f10 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f10 7s2
Enhanced Bohrov model atoma of Cf (Californij[um])
Orbital Diagram of Cf (Californij[um])
oksidacijsko stanje2, 3, 4, 5
Elektronegativnost
Electrophilicity Index
fundamental state of matter
agregatno stanjeSolid
gaseous state of matter
Boiling Point
Melting Point
1.173,15 K
critical pressure
Kritična temperatura
Trojna tačka
appearance
boja
Colorless
appearancesilvery
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 StructureSimple Hexagonal ()
lattice constant
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
Tvrdoća
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Brzina zvuka
klasifikacija
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number42
Mendeleev Number32
Pettifor Number39
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
122 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
2.900
Neutron Mass Absorption
Kvantni brojevi5I8
space group194 (P63/mmc)

Isotopes of Californium

Stable Isotopes0
Unstable Isotopes20
Natural Isotopes0

237Cf

Maseni broj237
broj neutrona139
relative atomic mass
237,062199272 ± 0,000104506 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
0,8 ± 0,2 s
spin5/2
nuclear quadrupole moment
datum otkrića1995
parity+

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

238Cf

Maseni broj238
broj neutrona140
relative atomic mass
238,06149 ± 0,00032 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
21,1 ± 1,3 ms
spin0
nuclear quadrupole moment
0
datum otkrića1995
parity+

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

239Cf

Maseni broj239
broj neutrona141
relative atomic mass
239,062482 ± 0,000129 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
28 ± 2 s
spin5/2
nuclear quadrupole moment
datum otkrića1981
parity+

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

240Cf

Maseni broj240
broj neutrona142
relative atomic mass
240,062253447 ± 0,00001936 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
40,3 ± 0,9 s
spin0
nuclear quadrupole moment
0
datum otkrića1970
parity+

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

241Cf

Maseni broj241
broj neutrona143
relative atomic mass
241,06369 ± 0,00018 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,35 ± 0,18 m
spin7/2
nuclear quadrupole moment
datum otkrića1970
parity-

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

242Cf

Maseni broj242
broj neutrona144
relative atomic mass
242,063754544 ± 0,00001384 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
3,49 ± 0,15 m
spin0
nuclear quadrupole moment
0
datum otkrića1967
parity+

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

243Cf

Maseni broj243
broj neutrona145
relative atomic mass
243,065475 ± 0,000194 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
10,8 ± 0,3 m
spin1/2
nuclear quadrupole moment
0
datum otkrića1967
parity+

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

244Cf

Maseni broj244
broj neutrona146
relative atomic mass
244,065999447 ± 0,000002809 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
19,5 ± 0,5 m
spin0
nuclear quadrupole moment
0
datum otkrića1956
parity+

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

245Cf

Maseni broj245
broj neutrona147
relative atomic mass
245,068046755 ± 0,000002606 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
45 ± 1,5 m
spin1/2
nuclear quadrupole moment
0
datum otkrića1956
parity+

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

246Cf

Maseni broj246
broj neutrona148
relative atomic mass
246,068803685 ± 0,000001625 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
35,7 ± 0,5 h
spin0
nuclear quadrupole moment
0
datum otkrića1951
parity+

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

247Cf

Maseni broj247
broj neutrona149
relative atomic mass
247,070971348 ± 0,00001538 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
3,11 ± 0,03 h
spin7/2
nuclear quadrupole moment
datum otkrića1954
parity+

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

248Cf

Maseni broj248
broj neutrona150
relative atomic mass
248,072182905 ± 0,000005497 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
333,5 ± 2,8 d
spin0
nuclear quadrupole moment
0
datum otkrića1954
parity+

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

249Cf

Maseni broj249
broj neutrona151
relative atomic mass
249,074850428 ± 0,000001269 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
351 ± 2 y
spin9/2
nuclear quadrupole moment
datum otkrića1954
parity-

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

250Cf

Maseni broj250
broj neutrona152
relative atomic mass
250,076404494 ± 0,00000165 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
13,08 ± 0,09 y
spin0
nuclear quadrupole moment
0
datum otkrića1954
parity+

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

251Cf

Maseni broj251
broj neutrona153
relative atomic mass
251,079587171 ± 0,000004187 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
898 ± 44 y
spin1/2
nuclear quadrupole moment
0
datum otkrića1954
parity+

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

252Cf

Maseni broj252
broj neutrona154
relative atomic mass
252,081626507 ± 0,000002531 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,645 ± 0,008 y
spin0
nuclear quadrupole moment
0
datum otkrića1954
parity+

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

253Cf

Maseni broj253
broj neutrona155
relative atomic mass
253,085133723 ± 0,00000457 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
17,81 ± 0,08 d
spin7/2
nuclear quadrupole moment
datum otkrića1954
parity+

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

254Cf

Maseni broj254
broj neutrona156
relative atomic mass
254,087323575 ± 0,000012304 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
60,5 ± 0,2 d
spin0
nuclear quadrupole moment
0
datum otkrića1955
parity+

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

255Cf

Maseni broj255
broj neutrona157
relative atomic mass
255,091046 ± 0,000215 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
85 ± 18 m
spin7/2
nuclear quadrupole moment
datum otkrića1981
parity+

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

256Cf

Maseni broj256
broj neutrona158
relative atomic mass
256,093442 ± 0,000338 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
12,3 ± 1,2 m
spin0
nuclear quadrupole moment
0
datum otkrića1980
parity+

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

historija

otkrivač ili izumiteljG.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr.
mjesto otkrićaUnited States
datum otkrića1950
EtimologijaNamed after the state and University of California.
pronunciationkal-eh-FOR-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