Beircéiliam (Bk)

element with the atomic number of 97

Atomic Number	97
Atomic Weight	247
Núicléónuimhir	233

Group
Period	7
Block	f

prótón	97 p⁺
neodrón	136 n⁰
leictreon	97 e^-

Animated Samhail Bohr of Bk (Beircéiliam)

Physical Property

Ga Adamhach
molar volume
covalent radius	168 pm 139 pm
Metallic Radius
ionic radius	96 pm 83 pm 93 pm 113.7 pm
Crystal Radius	110 pm 97 pm 107 pm 127.7 pm
Van der Waals radius	244 pm 333.9 pm
dlús	14.78 g/cm³

Chemical Property

fuinneamh

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

enthalpy of vaporization
enthalpy of fusion
eantalpacht chaighdeánach an fhoirmithe	310 kJ/mol
leictreon

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

Fiúsleictreon	2 ⓘ

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

Staid ocsaídiúcháine	2, 3, 4, 5
Leictridhiúltacht	0.19315
Electrophilicity Index
fundamental state of matter

phase of matter	Solid
gaseous state of matter
Boiling Point
Melting Point	1,259.15 K
critical pressure
critical temperature
triple point
appearance
dath	Colorless #ffffff #8a4fe3 #8a4fe3
appearance	silvery
Comhéifeacht athraonta
thermodynamic material property
Thermal Conductivity
Forbairt theirmeach
molar heat capacity
Specific Heat Capacity
Cóimheas saintoilleadh teasa
electrical properties
type
electrical conductivity
Friotachas
Forsheoltacht
Maighnéadas
type
So-ghabhálacht mhaighnéadach (Mass)
So-ghabhálacht mhaighnéadach (Molar)
So-ghabhálacht mhaighnéadach (Volume)
magnetic ordering
Teocht Curie
Néel temperature
struchtúr
Crystal Structure	Simple Hexagonal ()
lattice constant
Lattice Angles	π/2, π/2, 2 π/3
airíonna meicniúla
Cruas
Modal toirte
modal fiartha
modal Young
Cóimheas Poisson
luas forleata fuaime
aicmiúchán
Category	Actinides, Actinides
CAS Group
IUPAC Group
Glawe Number	41
Mendeleev Number	30
Pettifor Number	40
Geochemical Class
Goldschmidt classification	synthetic

eile

Gas Basicity
polarizability	125 ± 25 a₀
C6 Dispersion Coefficient
allotrope
Crosghearradh	710
Neutron Mass Absorption
Uimhir chandamach	6H15/2
space group	194 (P63/mmc)

Isotopes of Berkelium

Stable Isotopes	0
Unstable Isotopes	22
Natural Isotopes	0

²³³Bk

Núicléónuimhir	233
neutron number	136
Mais Adamhach Choibhneasta	233.056652 ± 0.00025 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	40 ± 30 s
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2015
Paireacht	-

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

²³⁴Bk

Núicléónuimhir	234
neutron number	137
Mais Adamhach Choibhneasta	234.057322 ± 0.000164 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	20 ± 5 s
Guairne	3
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2003
Paireacht	-

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

²³⁵Bk

Núicléónuimhir	235
neutron number	138
Mais Adamhach Choibhneasta	235.056651 ± 0.00043 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh
Paireacht	-

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

²³⁶Bk

Núicléónuimhir	236
neutron number	139
Mais Adamhach Choibhneasta	236.057479 ± 0.000387 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	26 ± 10 s
Guairne	4
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2017
Paireacht	+

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

²³⁷Bk

Núicléónuimhir	237
neutron number	140
Mais Adamhach Choibhneasta	237.057123 ± 0.000247 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh
Paireacht	-

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

²³⁸Bk

Núicléónuimhir	238
neutron number	141
Mais Adamhach Choibhneasta	238.058204 ± 0.000275 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	2.4 ± 0.08 m
Guairne	1
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1994
Paireacht

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

²³⁹Bk

Núicléónuimhir	239
neutron number	142
Mais Adamhach Choibhneasta	239.058239 ± 0.000222 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	7/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1989
Paireacht	+

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

²⁴⁰Bk

Núicléónuimhir	240
neutron number	143
Mais Adamhach Choibhneasta	240.059758 ± 0.000161 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	4.8 ± 0.8 m
Guairne	7
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1980
Paireacht	-

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

²⁴¹Bk

Núicléónuimhir	241
neutron number	144
Mais Adamhach Choibhneasta	241.060098 ± 0.000178 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	4.6 ± 0.4 m
Guairne	7/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2003
Paireacht	+

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

²⁴²Bk

Núicléónuimhir	242
neutron number	145
Mais Adamhach Choibhneasta	242.061999 ± 0.000144 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	7 ± 1.3 m
Guairne	3
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1972
Paireacht	+

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

²⁴³Bk

Núicléónuimhir	243
neutron number	146
Mais Adamhach Choibhneasta	243.063005905 ± 0.000004856 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	4.6 ± 0.2 h
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1950
Paireacht	-

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

²⁴⁴Bk

Núicléónuimhir	244
neutron number	147
Mais Adamhach Choibhneasta	244.065178969 ± 0.000015457 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	5.02 ± 0.03 h
Guairne	4
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1972
Paireacht	-

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

²⁴⁵Bk

Núicléónuimhir	245
neutron number	148
Mais Adamhach Choibhneasta	245.066359814 ± 0.000001923 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	4.95 ± 0.03 d
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1951
Paireacht	-

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

²⁴⁶Bk

Núicléónuimhir	246
neutron number	149
Mais Adamhach Choibhneasta	246.0686713 ± 0.000064433 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	1.8 ± 0.02 d
Guairne	2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1954
Paireacht

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

²⁴⁷Bk

Núicléónuimhir	247
neutron number	150
Mais Adamhach Choibhneasta	247.070305889 ± 0.00000557 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	1.38 ± 0.25 ky
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1965
Paireacht	-

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

²⁴⁸Bk

Núicléónuimhir	248
neutron number	151
Mais Adamhach Choibhneasta	248.073141689 ± 0.000053739 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	6
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1956
Paireacht	+

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

²⁴⁹Bk

Núicléónuimhir	249
neutron number	152
Mais Adamhach Choibhneasta	249.074983118 ± 0.000001339 Da
G-fhachtóir	0.57142857142857 ± 0.11428571428571
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	327.2 ± 0.3 d
Guairne	7/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1954
Paireacht	+

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

²⁵⁰Bk

Núicléónuimhir	250
neutron number	153
Mais Adamhach Choibhneasta	250.078317195 ± 0.00000311 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	3.212 ± 0.005 h
Guairne	2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1954
Paireacht	-

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

²⁵¹Bk

Núicléónuimhir	251
neutron number	154
Mais Adamhach Choibhneasta	251.080760555 ± 0.000011523 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	55.6 ± 1.1 m
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1967
Paireacht	-

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

²⁵²Bk

Núicléónuimhir	252
neutron number	155
Mais Adamhach Choibhneasta	252.08431 ± 0.000215 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	1.8 ± 0.5 m
Guairne
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1988
Paireacht

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

²⁵³Bk

Núicléónuimhir	253
neutron number	156
Mais Adamhach Choibhneasta	253.08688 ± 0.000385 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1991
Paireacht	-

decay mode	intensity
β⁻ (β⁻ decay)

²⁵⁴Bk

Núicléónuimhir	254
neutron number	157
Mais Adamhach Choibhneasta	254.0906 ± 0.00032 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh
Paireacht

decay mode	intensity
β⁻ (β⁻ decay)

stair

fionnachtaí nó aireagóir	G.T.Seaborg, S.G.Tompson, A.Ghiorso
áit ar tháinig air/uirthi	United States
dáta fionnachtana nó tionscnaimh	1949
Sanasaíocht	Named after Berkeley, California the city of its discovery.
pronunciation	BURK-li-em (Béarla)

foinse

Abundance
Abundance in Earth's crust
natural abundance (aigéan)
natural abundance (corp an duine)	0 %
natural abundance (dreigeoideach)	0 %
natural abundance (An Ghrian)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Beircéiliam on ChemicalAid

Australian Educational Vocabulary ID	scot/2377
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
Freebase ID	/m/025svnm
French Vikidia ID	Berkélium
Great Russian Encyclopedia Online ID	1860452
ID GND	4511718-4
ID Gran Enciclopèdia Catalana	0223127
InChI	InChI=1S/Bk
InChIKey	PWVKJRSRVJTHTR-UHFFFAOYSA-N
KBpedia ID	Berkelium
MeSH descriptor ID	D001603
NE.se ID	berkelium
National Library of Israel J9U ID	987007597623305171
OmegaWiki Defined Meaning	156441
Probes And Drugs ID	PD058313
PubChem 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
aitheantóir LoC	sh2012004283
uimhir CAS	7440-40-6

Beircéiliam (Bk)

Physical Property

Chemical Property

eile

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

stair

foinse

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