Kalefornium, ²Californiumi

Kalefornium, ²Californiumi (Cf)

chemical element with the atomic number of 98
Atomic Number98
Atomic Weight251
Numri i masës237
Group
Period7
Blockf
protoni98 p+
neutroni139 n0
elektroni98 e-
Animated Bohr model of Cf (Kalefornium, ²Californiumi)

Tipar Fizik

Atomic Radius
molar volume
covalent radius
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
density

Chemical Property

energjia
proton affinity
electron affinity
ionization energy
ionization energy of Cf (Kalefornium, ²Californiumi)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
elektroni
electron shell2, 8, 18, 32, 28, 8, 2
Bohr model: Cf (Kalefornium, ²Californiumi)
valence electron2
Lewis structure: Cf (Kalefornium, ²Californiumi)
konfigurimi i elektronit[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 (Kalefornium, ²Californiumi)
Orbital Diagram of Cf (Kalefornium, ²Californiumi)
oxidation number2, 3, 4, 5
Elektronegativiteti
Electrophilicity Index
fundamental state of matter
gjendja agregate e materiesSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
triple point
appearance
Ngjyra
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
Superpërcjellshmëria
Magnetizimi
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
strukturë
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
Shpejtësia e zërit
klasifikim
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
numër kuantik5I8
space group194 (P63/mmc)

Isotopes of Californium

Stable Isotopes0
Unstable Isotopes20
Natural Isotopes0

237Cf

Numri i masës237
numri i neutroneve139
Relative Atomic Mass
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
0,8 ± 0,2 s
Spini5/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1995
parity+

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

238Cf

Numri i masës238
numri i neutroneve140
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
21,1 ± 1,3 ms
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1995
parity+

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

239Cf

Numri i masës239
numri i neutroneve141
Relative Atomic Mass
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
28 ± 2 s
Spini5/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1981
parity+

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

240Cf

Numri i masës240
numri i neutroneve142
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
40,3 ± 0,9 s
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1970
parity+

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

241Cf

Numri i masës241
numri i neutroneve143
Relative Atomic Mass
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
2,35 ± 0,18 m
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1970
parity-

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

242Cf

Numri i masës242
numri i neutroneve144
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
3,49 ± 0,15 m
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1967
parity+

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

243Cf

Numri i masës243
numri i neutroneve145
Relative Atomic Mass
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
10,8 ± 0,3 m
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1967
parity+

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

244Cf

Numri i masës244
numri i neutroneve146
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
19,5 ± 0,5 m
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1956
parity+

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

245Cf

Numri i masës245
numri i neutroneve147
Relative Atomic Mass
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
45 ± 1,5 m
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1956
parity+

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

246Cf

Numri i masës246
numri i neutroneve148
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
35,7 ± 0,5 h
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1951
parity+

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

247Cf

Numri i masës247
numri i neutroneve149
Relative Atomic Mass
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
3,11 ± 0,03 h
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1954
parity+

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

248Cf

Numri i masës248
numri i neutroneve150
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
333,5 ± 2,8 d
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1954
parity+

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

249Cf

Numri i masës249
numri i neutroneve151
Relative Atomic Mass
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
351 ± 2 y
Spini9/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1954
parity-

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

250Cf

Numri i masës250
numri i neutroneve152
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
13,08 ± 0,09 y
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1954
parity+

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

251Cf

Numri i masës251
numri i neutroneve153
Relative Atomic Mass
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
898 ± 44 y
Spini1/2
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1954
parity+

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

252Cf

Numri i masës252
numri i neutroneve154
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
2,645 ± 0,008 y
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1954
parity+

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

253Cf

Numri i masës253
numri i neutroneve155
Relative Atomic Mass
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
17,81 ± 0,08 d
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1954
parity+

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

254Cf

Numri i masës254
numri i neutroneve156
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
60,5 ± 0,2 d
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1955
parity+

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

255Cf

Numri i masës255
numri i neutroneve157
Relative Atomic Mass
g-factor
natural abundance
Radioaktivitet☢️ radioactive element
half-life
85 ± 18 m
Spini7/2
nuclear quadrupole moment
koha e zbulimit apo shpikjes1981
parity+

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

256Cf

Numri i masës256
numri i neutroneve158
Relative Atomic Mass
g-factor
0
natural abundance
Radioaktivitet☢️ radioactive element
half-life
12,3 ± 1,2 m
Spini0
nuclear quadrupole moment
0
koha e zbulimit apo shpikjes1980
parity+

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

historia

zbuluesG.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr.
vendndodhja e zbulimitUnited States
koha e zbulimit apo shpikjes1950
EtimologjiaNamed after the state and University of California.
pronunciationkal-eh-FOR-ni-em (anglisht)

burim

Abundance
Abundance in Earth's crust
natural abundance (Oqeani)
natural abundance (Trupi i njeriut)
0 %
natural abundance (meteoroid)
0 %
natural abundance (Diell)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants