Kalifornij (Cf)

chemical element with the atomic number of 98

Atomski broj	98
Relativna atomska masa	251
Maseni broj	237

Skupina
Perioda	7
Blok	f

proton	98 p⁺
neutron	139 n⁰
elektron	98 e^-

Animated Bohrov model atoma of Cf (Kalifornij)

Physical Property

Atomski Radijus
Molni volumen
Kovalentni Radijus	168 pm 140 pm
Metallic Radius
Ionski radijus	95 pm 82,1 pm 92 pm 112,6 pm
Crystal Radius	109 pm 96,1 pm 106 pm 126,6 pm
Van der Waals radius	245 pm 331,3 pm
gustoća	15,1 g/cm³

Kemijsko Svojstvo

energija

proton affinity
Elektronski afinitet
ionization energy	6,2817 eV/particle 12 eV/particle 22,4 eV/particle 37,7 eV/particle 51,9 eV/particle 75 eV/particle 91 eV/particle 112,9 eV/particle 133 eV/particle 152 eV/particle 178 eV/particle 202 eV/particle 225 eV/particle 247 eV/particle 265 eV/particle 286 eV/particle 310 eV/particle 334 eV/particle 368 eV/particle 390 eV/particle 536 eV/particle 566 eV/particle 597 eV/particle 630 eV/particle 662 eV/particle 695 eV/particle 744 eV/particle 778 eV/particle 814 eV/particle 847 eV/particle 1.010 eV/particle 1.050 eV/particle 1.090 eV/particle 1.120 eV/particle 1.250 eV/particle 1.300 eV/particle 1.420 eV/particle 1.460 eV/particle 1.620 eV/particle 1.700 eV/particle 1.790 eV/particle 1.880 eV/particle 1.960 eV/particle 2.050 eV/particle 2.130 eV/particle 2.220 eV/particle 2.320 eV/particle 2.410 eV/particle 2.490 eV/particle 2.580 eV/particle 2.670 eV/particle 2.750 eV/particle 3.186 eV/particle 3.261 eV/particle 3.340 eV/particle 3.424 eV/particle 3.503 eV/particle 3.581 eV/particle 3.747 eV/particle 3.828 eV/particle 3.915 eV/particle 3.998 eV/particle 4.329 eV/particle 4.407 eV/particle 4.494 eV/particle 4.570 eV/particle 5.100 eV/particle 5.190 eV/particle 5.430 eV/particle 5.520 eV/particle 8.730 eV/particle 8.900 eV/particle 9.090 eV/particle 9.290 eV/particle 9.480 eV/particle 9.660 eV/particle 10.140 eV/particle 10.330 eV/particle 10.550 eV/particle 10.740 eV/particle 11.300 eV/particle 11.470 eV/particle 11.650 eV/particle 11.820 eV/particle 13.450 eV/particle 13.660 eV/particle 14.080 eV/particle 14.280 eV/particle 29.000 eV/particle 29.500 eV/particle 30.000 eV/particle 30.500 eV/particle 36.500 eV/particle 37.100 eV/particle 37.900 eV/particle 38.443,5 eV/particle 150.579,3 eV/particle 153.124 eV/particle

Toplina isparivanja
toplina taljenja
standard enthalpy of formation	196 kJ/mol
elektron

Elektronska ljuska	2, 8, 18, 32, 28, 8, 2

valence electron	2 ⓘ

electron configuration	[Rn] 5f¹⁰ 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f¹⁰ 7s²

Oksidacijski broj	2, 3, 4, 5
Elektronegativnost	0.20369
Electrophilicity Index
fundamental state of matter

agregatno stanje	Čvrsto
gaseous state of matter
Vrelište
Talište	1.173,15 K
critical pressure
critical temperature
Trojna točka
appearance
boja	Bezbojan #ffffff #a136d4 #a136d4
appearance	silvery
Indeks prelamanja
thermodynamic material property
Toplinska vodljivost
Toplinsko istezanje
molar heat capacity
Specifični toplinski kapacitet
heat capacity ratio
electrical properties
type
electrical conductivity
Električna otpornost i provodnost
Supravodljivost
Magnetizam
type
Magnetna susceptibilnost (Mass)
Magnetna susceptibilnost (Molar)
Magnetna susceptibilnost (Volume)
magnetic ordering
Curieva temperatura
Néel temperature
struktura
Kristalna struktura	Jednostavna heksagonska ()
lattice constant
Lattice Angles	π/2, π/2, 2 π/3
mechanical property
Tvrdoća
bulk modulus
shear modulus
Youngov modul elastičnosti
Poissonov omjer
brzina zvuka
classification
Kategorija	Aktinoidi, Actinides
CAS Group
IUPAC Group
Glawe Number	42
Mendeleev Number	32
Pettifor Number	39
Geochemical Class
Goldschmidt classification	synthetic

other

Gas Basicity
polarizability	122 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Nuklearni udarni presjek	2.900
Neutron Mass Absorption
Kvantni brojevi	5I8
space group	194 (P63/mmc)

Isotopes of Californium

Stabilni izotopi	0
Nestabilni izotopi	20
Natural Isotopes	0

²³⁷Cf

Maseni broj	237
neutron number	139
Relativna Atomska Masa	237,062199272 ± 0,000104506 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	0,8 ± 0,2 s
spin	5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1995
Parnost	+

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

²³⁸Cf

Maseni broj	238
neutron number	140
Relativna Atomska Masa	238,06149 ± 0,00032 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	21,1 ± 1,3 ms
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1995
Parnost	+

decay mode	intensity
SF (spontaneous fission)	97.5%
α (α emission)	2.5%

²³⁹Cf

Maseni broj	239
neutron number	141
Relativna Atomska Masa	239,062482 ± 0,000129 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	28 ± 2 s
spin	5/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1981
Parnost	+

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

²⁴⁰Cf

Maseni broj	240
neutron number	142
Relativna Atomska Masa	240,062253447 ± 0,00001936 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	40,3 ± 0,9 s
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1970
Parnost	+

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

²⁴¹Cf

Maseni broj	241
neutron number	143
Relativna Atomska Masa	241,06369 ± 0,00018 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,35 ± 0,18 m
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1970
Parnost	-

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

²⁴²Cf

Maseni broj	242
neutron number	144
Relativna Atomska Masa	242,063754544 ± 0,00001384 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	3,49 ± 0,15 m
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1967
Parnost	+

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

²⁴³Cf

Maseni broj	243
neutron number	145
Relativna Atomska Masa	243,065475 ± 0,000194 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	10,8 ± 0,3 m
spin	1/2
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1967
Parnost	+

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

²⁴⁴Cf

Maseni broj	244
neutron number	146
Relativna Atomska Masa	244,065999447 ± 0,000002809 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	19,5 ± 0,5 m
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1956
Parnost	+

decay mode	intensity
α (α emission)	75%
ϵ (electron capture)	25%

²⁴⁵Cf

Maseni broj	245
neutron number	147
Relativna Atomska Masa	245,068046755 ± 0,000002606 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	45 ± 1,5 m
spin	1/2
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1956
Parnost	+

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

²⁴⁶Cf

Maseni broj	246
neutron number	148
Relativna Atomska Masa	246,068803685 ± 0,000001625 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	35,7 ± 0,5 h
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1951
Parnost	+

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

²⁴⁷Cf

Maseni broj	247
neutron number	149
Relativna Atomska Masa	247,070971348 ± 0,00001538 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	3,11 ± 0,03 h
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1954
Parnost	+

decay mode	intensity
ϵ (electron capture)	99.965%
α (α emission)	0.035%

²⁴⁸Cf

Maseni broj	248
neutron number	150
Relativna Atomska Masa	248,072182905 ± 0,000005497 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	333,5 ± 2,8 d
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1954
Parnost	+

decay mode	intensity
α (α emission)	100%
SF (spontaneous fission)	0.0029%

²⁴⁹Cf

Maseni broj	249
neutron number	151
Relativna Atomska Masa	249,074850428 ± 0,000001269 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	351 ± 2 y
spin	9/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1954
Parnost	-

decay mode	intensity
α (α emission)	100%
SF (spontaneous fission)	5%

²⁵⁰Cf

Maseni broj	250
neutron number	152
Relativna Atomska Masa	250,076404494 ± 0,00000165 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	13,08 ± 0,09 y
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1954
Parnost	+

decay mode	intensity
α (α emission)	99.923%
SF (spontaneous fission)	0.077%

²⁵¹Cf

Maseni broj	251
neutron number	153
Relativna Atomska Masa	251,079587171 ± 0,000004187 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	898 ± 44 y
spin	1/2
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1954
Parnost	+

decay mode	intensity
α (α emission)	100%
SF (spontaneous fission)

²⁵²Cf

Maseni broj	252
neutron number	154
Relativna Atomska Masa	252,081626507 ± 0,000002531 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,645 ± 0,008 y
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1954
Parnost	+

decay mode	intensity
α (α emission)	96.8972%
SF (spontaneous fission)	3.1028%

²⁵³Cf

Maseni broj	253
neutron number	155
Relativna Atomska Masa	253,085133723 ± 0,00000457 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	17,81 ± 0,08 d
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1954
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	99.69%
α (α emission)	0.31%

²⁵⁴Cf

Maseni broj	254
neutron number	156
Relativna Atomska Masa	254,087323575 ± 0,000012304 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	60,5 ± 0,2 d
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1955
Parnost	+

decay mode	intensity
SF (spontaneous fission)	99.69%
α (α emission)	0.31%
2β⁻ (double β⁻ decay)

²⁵⁵Cf

Maseni broj	255
neutron number	157
Relativna Atomska Masa	255,091046 ± 0,000215 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	85 ± 18 m
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1981
Parnost	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
SF (spontaneous fission)
α (α emission)

²⁵⁶Cf

Maseni broj	256
neutron number	158
Relativna Atomska Masa	256,093442 ± 0,000338 Da
g-factor	0
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	12,3 ± 1,2 m
spin	0
nuclear quadrupole moment	0
vrijeme otkrića ili izuma	1980
Parnost	+

decay mode	intensity
SF (spontaneous fission)	100%
α (α emission)
2β⁻ (double β⁻ decay)

povijest

otkrio/izumio	G.T.Seaborg, S.G.Tompson, A.Ghiorso, K.Street Jr.
location of discovery	United States
vrijeme otkrića ili izuma	1950
Etimologija	Named after the state and University of California.
pronunciation	kal-eh-FOR-ni-em (engleski)

source

Obilnost
Zastupljenost u Zemljinoj kori
natural abundance (ocean)
natural abundance (tijelo)	0 %
natural abundance (meteoroid)	0 %
natural abundance (Sunce)	0 %
Zastupljenost u svemiru	0 %

Nuclear Screening Constants

Kalifornij on ChemicalAid

Art & Architecture Thesaurus ID	300380331
Australian Educational Vocabulary ID	scot/3074
CAS registarski broj	7440-71-3
ChEBI ID	33392
ChemSpider ID	22433
DSSTOX compound identifier	DTXCID00147883
DSSTox substance ID	DTXSID00225392
Den Store Danske ID	californium
Encyclopædia Universalis ID	californium
Freebase ID	/m/025tkv8
French Vikidia ID	Californium
GND identifikator	4147208-1
Gran Enciclopèdia Catalana ID	0087352
Gran Enciclopèdia Catalana ID	0017254
Great Russian Encyclopedia Online ID	2036031
ID oznaka u mrežnoj enciklopediji Britannici	science/californium
InChI	InChI=1S/Cf
InChIKey	HGLDOAKPQXAFKI-UHFFFAOYSA-N
KBpedia ID	Californium
LCCN	sh89004338
MeSH ID	D002142
NALT ID	3198
NDL ID	00565048
National Library of Israel J9U ID	987007553750405171
OpenAlex ID	C547234621
PubChem ID	23997
Römpp online ID	RD-03-00207
Store norske leksikon ID	californium
Treccani ID	californio
UNII	975X05H15A
USGS Thesaurus ID	1419
WordNet 3.1 Synset ID	14657215-n
značenje prema OmegaWiki	156905

Kalifornij (Cf)

Physical Property

Kemijsko Svojstvo

other

Isotopes of Californium

237Cf

238Cf

239Cf

240Cf

241Cf

242Cf

243Cf

244Cf

245Cf

246Cf

247Cf

248Cf

249Cf

250Cf

251Cf

252Cf

253Cf

254Cf

255Cf

256Cf

povijest

source

Nuclear Screening Constants

²³⁷Cf

²³⁸Cf

²³⁹Cf

²⁴⁰Cf

²⁴¹Cf

²⁴²Cf

²⁴³Cf

²⁴⁴Cf

²⁴⁵Cf

²⁴⁶Cf

²⁴⁷Cf

²⁴⁸Cf

²⁴⁹Cf

²⁵⁰Cf

²⁵¹Cf

²⁵²Cf

²⁵³Cf

²⁵⁴Cf

²⁵⁵Cf

²⁵⁶Cf