Berkelij[um] (Bk)

hemijski element sa simbolom Bk i atomskim brojem 97

Atomic Number	97
Atomic Weight	247
Maseni broj	233

Group
Period	7
Block	f

Proton	97 p⁺
Neutron	136 n⁰
Elektron	97 e^-

Animated Bohrov model atoma of Bk (Berkelij[um])

Physical Property

Atomski Radijus
Molarni volumen
covalent radius	168 pm 139 pm
Metallic Radius
Ionski radijus	96 pm 83 pm 93 pm 113,7 pm
Crystal Radius	110 pm 97 pm 107 pm 127,7 pm
Van der Waalsov radijus	244 pm 333,9 pm
gustoća	14,78 g/cm³

Chemical Property

energija

proton affinity
electron affinity
ionization energy	6,1978 eV/particle 11,9 eV/particle 21,6 eV/particle 36 eV/particle 56 eV/particle 70,1 eV/particle 90 eV/particle 114 eV/particle 130 eV/particle 147 eV/particle 171 eV/particle 195 eV/particle 218 eV/particle 240 eV/particle 259 eV/particle 279 eV/particle 303 eV/particle 339 eV/particle 361 eV/particle 497 eV/particle 526 eV/particle 557 eV/particle 590 eV/particle 621 eV/particle 652 eV/particle 700 eV/particle 733 eV/particle 768 eV/particle 800 eV/particle 960 eV/particle 1.000 eV/particle 1.040 eV/particle 1.080 eV/particle 1.200 eV/particle 1.240 eV/particle 1.360 eV/particle 1.410 eV/particle 1.550 eV/particle 1.630 eV/particle 1.720 eV/particle 1.800 eV/particle 1.890 eV/particle 1.970 eV/particle 2.050 eV/particle 2.140 eV/particle 2.240 eV/particle 2.320 eV/particle 2.410 eV/particle 2.490 eV/particle 2.580 eV/particle 2.670 eV/particle 3.080 eV/particle 3.154 eV/particle 3.232 eV/particle 3.315 eV/particle 3.393 eV/particle 3.469 eV/particle 3.630 eV/particle 3.709 eV/particle 3.797 eV/particle 3.877 eV/particle 4.202 eV/particle 4.281 eV/particle 4.365 eV/particle 4.445 eV/particle 4.940 eV/particle 5.040 eV/particle 5.270 eV/particle 5.360 eV/particle 8.500 eV/particle 8.670 eV/particle 8.850 eV/particle 9.050 eV/particle 9.240 eV/particle 9.420 eV/particle 9.880 eV/particle 10.070 eV/particle 10.280 eV/particle 10.480 eV/particle 11.020 eV/particle 11.190 eV/particle 11.380 eV/particle 11.540 eV/particle 13.090 eV/particle 13.300 eV/particle 13.720 eV/particle 13.910 eV/particle 28.380 eV/particle 28.800 eV/particle 29.300 eV/particle 29.800 eV/particle 35.500 eV/particle 36.200 eV/particle 37.000 eV/particle 37.457,6 eV/particle 146.904,7 eV/particle 149.398 eV/particle

Toplota isparavanja
toplota topljenja
standard enthalpy of formation	310 kJ/mol
Elektron

electron shell	2, 8, 18, 32, 27, 8, 2

Valentni elektron	2 ⓘ

electron configuration	[Rn] 5f⁹ 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f⁹ 7s²

oksidacijsko stanje	2, 3, 4, 5
Elektronegativnost	0.19315
Electrophilicity Index
fundamental state of matter

agregatno stanje	Solid
gaseous state of matter
Boiling Point
Melting Point	1.259,15 K
critical pressure
Kritična temperatura
Trojna tačka
appearance
boja	Colorless #ffffff #8a4fe3 #8a4fe3
appearance	silvery
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 Structure	Simple Hexagonal ()
lattice constant
Lattice Angles	π/2, π/2, 2 π/3
mechanical property
Tvrdoća
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Brzina zvuka
klasifikacija
Category	Actinides, Actinides
CAS Group
IUPAC Group
Glawe Number	41
Mendeleev Number	30
Pettifor Number	40
Geochemical Class
Goldschmidt classification	synthetic

other

Gas Basicity
polarizability	125 ± 25 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section	710
Neutron Mass Absorption
Kvantni brojevi	6H15/2
space group	194 (P63/mmc)

Isotopes of Berkelium

Stable Isotopes	0
Unstable Isotopes	22
Natural Isotopes	0

²³³Bk

Maseni broj	233
broj neutrona	136
Relative Atomic Mass	233,056652 ± 0,00025 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	40 ± 30 s
spin	3/2
nuclear quadrupole moment
datum otkrića	2015
parity	-

decay mode	intensity
α (α emission)	82%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²³⁴Bk

Maseni broj	234
broj neutrona	137
Relative Atomic Mass	234,057322 ± 0,000164 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	20 ± 5 s
spin	3
nuclear quadrupole moment
datum otkrića	2003
parity	-

decay mode	intensity
α (α emission)	80%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	20%

²³⁵Bk

Maseni broj	235
broj neutrona	138
Relative Atomic Mass	235,056651 ± 0,00043 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	3/2
nuclear quadrupole moment
datum otkrića
parity	-

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

²³⁶Bk

Maseni broj	236
broj neutrona	139
Relative Atomic Mass	236,057479 ± 0,000387 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	26 ± 10 s
spin	4
nuclear quadrupole moment
datum otkrića	2017
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)
β⁺ SF (β⁺-delayed fission)	0.04%

²³⁷Bk

Maseni broj	237
broj neutrona	140
Relative Atomic Mass	237,057123 ± 0,000247 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	3/2
nuclear quadrupole moment
datum otkrića
parity	-

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

²³⁸Bk

Maseni broj	238
broj neutrona	141
Relative Atomic Mass	238,058204 ± 0,000275 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,4 ± 0,08 m
spin	1
nuclear quadrupole moment
datum otkrića	1994
parity

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)
β⁺ SF (β⁺-delayed fission)	0.048%

²³⁹Bk

Maseni broj	239
broj neutrona	142
Relative Atomic Mass	239,058239 ± 0,000222 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	7/2
nuclear quadrupole moment
datum otkrića	1989
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)	0.01%
SF (spontaneous fission)	0.01%

²⁴⁰Bk

Maseni broj	240
broj neutrona	143
Relative Atomic Mass	240,059758 ± 0,000161 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	4,8 ± 0,8 m
spin	7
nuclear quadrupole moment
datum otkrića	1980
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)
α (α emission)
β⁺ SF (β⁺-delayed fission)	0.002%

²⁴¹Bk

Maseni broj	241
broj neutrona	144
Relative Atomic Mass	241,060098 ± 0,000178 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	4,6 ± 0,4 m
spin	7/2
nuclear quadrupole moment
datum otkrića	2003
parity	+

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

²⁴²Bk

Maseni broj	242
broj neutrona	145
Relative Atomic Mass	242,061999 ± 0,000144 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	7 ± 1,3 m
spin	3
nuclear quadrupole moment
datum otkrića	1972
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ SF (β⁺-delayed fission)	3%
α (α emission)

²⁴³Bk

Maseni broj	243
broj neutrona	146
Relative Atomic Mass	243,063005905 ± 0,000004856 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	4,6 ± 0,2 h
spin	3/2
nuclear quadrupole moment
datum otkrića	1950
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)	0.15%

²⁴⁴Bk

Maseni broj	244
broj neutrona	147
Relative Atomic Mass	244,065178969 ± 0,000015457 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	5,02 ± 0,03 h
spin	4
nuclear quadrupole moment
datum otkrića	1972
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)
α (α emission)	0.006%

²⁴⁵Bk

Maseni broj	245
broj neutrona	148
Relative Atomic Mass	245,066359814 ± 0,000001923 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	4,95 ± 0,03 d
spin	3/2
nuclear quadrupole moment
datum otkrića	1951
parity	-

decay mode	intensity
ϵ (electron capture)	99.88%
α (α emission)	0.12%

²⁴⁶Bk

Maseni broj	246
broj neutrona	149
Relative Atomic Mass	246,0686713 ± 0,000064433 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,8 ± 0,02 d
spin	2
nuclear quadrupole moment
datum otkrića	1954
parity

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)

²⁴⁷Bk

Maseni broj	247
broj neutrona	150
Relative Atomic Mass	247,070305889 ± 0,00000557 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,38 ± 0,25 ky
spin	3/2
nuclear quadrupole moment
datum otkrića	1965
parity	-

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

²⁴⁸Bk

Maseni broj	248
broj neutrona	151
Relative Atomic Mass	248,073141689 ± 0,000053739 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	6
nuclear quadrupole moment
datum otkrića	1956
parity	+

decay mode	intensity
α (α emission)
ϵ (electron capture)

²⁴⁹Bk

Maseni broj	249
broj neutrona	152
Relative Atomic Mass	249,074983118 ± 0,000001339 Da
g-factor	0,57142857142857 ± 0,11428571428571
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	327,2 ± 0,3 d
spin	7/2
nuclear quadrupole moment
datum otkrića	1954
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
α (α emission)	0.00145%
SF (spontaneous fission)	47%

²⁵⁰Bk

Maseni broj	250
broj neutrona	153
Relative Atomic Mass	250,078317195 ± 0,00000311 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	3,212 ± 0,005 h
spin	2
nuclear quadrupole moment
datum otkrića	1954
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁵¹Bk

Maseni broj	251
broj neutrona	154
Relative Atomic Mass	251,080760555 ± 0,000011523 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	55,6 ± 1,1 m
spin	3/2
nuclear quadrupole moment
datum otkrića	1967
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁵²Bk

Maseni broj	252
broj neutrona	155
Relative Atomic Mass	252,08431 ± 0,000215 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,8 ± 0,5 m
spin
nuclear quadrupole moment
datum otkrića	1988
parity

decay mode	intensity
β⁻ (β⁻ decay)
α (α emission)

²⁵³Bk

Maseni broj	253
broj neutrona	156
Relative Atomic Mass	253,08688 ± 0,000385 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	3/2
nuclear quadrupole moment
datum otkrića	1991
parity	-

decay mode	intensity
β⁻ (β⁻ decay)

²⁵⁴Bk

Maseni broj	254
broj neutrona	157
Relative Atomic Mass	254,0906 ± 0,00032 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin
nuclear quadrupole moment
datum otkrića
parity

decay mode	intensity
β⁻ (β⁻ decay)

historija

otkrivač ili izumitelj	G.T.Seaborg, S.G.Tompson, A.Ghiorso
mjesto otkrića	United States
datum otkrića	1949
Etimologija	Named after Berkeley, California the city of its discovery.
pronunciation	BURK-li-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

Berkelij[um] on ChemicalAid

Australian Educational Vocabulary ID	scot/2377
CAS broj	7440-40-6
ChEBI ID	33391
ChemSpider ID	22409
DSSTOX compound identifier	DTXCID20147880
DSSTox substance ID	DTXSID70225389
Den Store Danske ID	berkelium
Drugbank ID	12993
Elhuyar ZTH ID	021522
Encyclopædia Britannica Online ID	science/berkelium
Encyclopædia Universalis ID	berkelium
French Vikidia ID	Berkélium
GND	4511718-4
Gran Enciclopèdia Catalana ID	0223127
Great Russian Encyclopedia Online ID	1860452
ID na KBpediji	Berkelium
InChIKey	PWVKJRSRVJTHTR-UHFFFAOYSA-N
InChl	InChI=1S/Bk
LCCN	sh2012004283
MeSH ID	D001603
NE.se ID	berkelium
National Library of Israel J9U ID	987007597623305171
OmegaWiki određeno značenje	156441
Probes And Drugs ID	PD058313
PubChem ID (CID)	23971
Römpp online ID	RD-02-00987
Store norske leksikon ID	berkelium
Treccani ID	berkelio
UNII	2YQA718KUU
USGS Thesaurus ID	1405
WordNet 3.1 Synset ID	14655312-n
broj na Freebaseu	/m/025svnm

Berkelij[um] (Bk)

Physical Property

Chemical Property

other

Isotopes of Berkelium

233Bk

234Bk

235Bk

236Bk

237Bk

238Bk

239Bk

240Bk

241Bk

242Bk

243Bk

244Bk

245Bk

246Bk

247Bk

248Bk

249Bk

250Bk

251Bk

252Bk

253Bk

254Bk

historija

izvor

Nuclear Screening Constants

²³³Bk

²³⁴Bk

²³⁵Bk

²³⁶Bk

²³⁷Bk

²³⁸Bk

²³⁹Bk

²⁴⁰Bk

²⁴¹Bk

²⁴²Bk

²⁴³Bk

²⁴⁴Bk

²⁴⁵Bk

²⁴⁶Bk

²⁴⁷Bk

²⁴⁸Bk

²⁴⁹Bk

²⁵⁰Bk

²⁵¹Bk

²⁵²Bk

²⁵³Bk

²⁵⁴Bk