Berkelij (Bk)

element with the atomic number of 97

Atomski broj	97
Relativna atomska masa	247
Maseni broj	233

Skupina
Perioda	7
Blok	f

proton	97 p⁺
neutron	136 n⁰
elektron	97 e^-

Animated Bohrov model atoma of Bk (Berkelij)

Physical Property

Atomski Radijus
Molni volumen
Kovalentni Radijus	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 Waals radius	244 pm 333,9 pm
gustoća	14,78 g/cm³

Kemijsko Svojstvo

{ERROR}

energija

proton affinity
Elektronski afinitet
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

Toplina isparivanja
toplina taljenja
standard enthalpy of formation	310 kJ/mol
elektron

Elektronska ljuska	2, 8, 18, 32, 27, 8, 2

valence electron	2 ⓘ

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

Oksidacijski broj	2, 3, 4, 5
Elektronegativnost	0.19315
Electrophilicity Index
fundamental state of matter

agregatno stanje
gaseous state of matter
Vrelište
Talište	1.259,15 K
critical pressure
critical temperature
Trojna točka
appearance
boja	Crna #ffffff #8a4fe3 #8a4fe3
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	{ERROR}
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	41
Mendeleev Number	30
Pettifor Number	40
Geochemical Class
Goldschmidt classification	synthetic

other

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

Isotopes of Berkelium

Stabilni izotopi	0
Nestabilni izotopi	22
Natural Isotopes	0

²³³Bk

Maseni broj	233
neutron number	136
Relativna Atomska Masa	233,056652 ± 0,00025 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	40 ± 30 s
spin	3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	2015
Parnost	-

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

²³⁴Bk

Maseni broj	234
neutron number	137
Relativna Atomska Masa	234,057322 ± 0,000164 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	20 ± 5 s
spin	3
nuclear quadrupole moment
vrijeme otkrića ili izuma	2003
Parnost	-

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

²³⁵Bk

Maseni broj	235
neutron number	138
Relativna Atomska Masa	235,056651 ± 0,00043 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma
Parnost	-

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

²³⁶Bk

Maseni broj	236
neutron number	139
Relativna Atomska Masa	236,057479 ± 0,000387 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	26 ± 10 s
spin	4
nuclear quadrupole moment
vrijeme otkrića ili izuma	2017
Parnost	+

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

²³⁷Bk

Maseni broj	237
neutron number	140
Relativna Atomska Masa	237,057123 ± 0,000247 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma
Parnost	-

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

²³⁸Bk

Maseni broj	238
neutron number	141
Relativna Atomska Masa	238,058204 ± 0,000275 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	2,4 ± 0,08 m
spin	1
nuclear quadrupole moment
vrijeme otkrića ili izuma	1994
Parnost

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

²³⁹Bk

Maseni broj	239
neutron number	142
Relativna Atomska Masa	239,058239 ± 0,000222 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	7/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1989
Parnost	+

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

²⁴⁰Bk

Maseni broj	240
neutron number	143
Relativna Atomska Masa	240,059758 ± 0,000161 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	4,8 ± 0,8 m
spin	7
nuclear quadrupole moment
vrijeme otkrića ili izuma	1980
Parnost	-

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

²⁴¹Bk

Maseni broj	241
neutron number	144
Relativna Atomska Masa	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
vrijeme otkrića ili izuma	2003
Parnost	+

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

²⁴²Bk

Maseni broj	242
neutron number	145
Relativna Atomska Masa	242,061999 ± 0,000144 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	7 ± 1,3 m
spin	3
nuclear quadrupole moment
vrijeme otkrića ili izuma	1972
Parnost	+

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

²⁴³Bk

Maseni broj	243
neutron number	146
Relativna Atomska Masa	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
vrijeme otkrića ili izuma	1950
Parnost	-

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

²⁴⁴Bk

Maseni broj	244
neutron number	147
Relativna Atomska Masa	244,065178969 ± 0,000015457 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	5,02 ± 0,03 h
spin	4
nuclear quadrupole moment
vrijeme otkrića ili izuma	1972
Parnost	-

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

²⁴⁵Bk

Maseni broj	245
neutron number	148
Relativna Atomska Masa	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
vrijeme otkrića ili izuma	1951
Parnost	-

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

²⁴⁶Bk

Maseni broj	246
neutron number	149
Relativna Atomska Masa	246,0686713 ± 0,000064433 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,8 ± 0,02 d
spin	2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1954
Parnost

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

²⁴⁷Bk

Maseni broj	247
neutron number	150
Relativna Atomska Masa	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
vrijeme otkrića ili izuma	1965
Parnost	-

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

²⁴⁸Bk

Maseni broj	248
neutron number	151
Relativna Atomska Masa	248,073141689 ± 0,000053739 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	6
nuclear quadrupole moment
vrijeme otkrića ili izuma	1956
Parnost	+

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

²⁴⁹Bk

Maseni broj	249
neutron number	152
Relativna Atomska Masa	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
vrijeme otkrića ili izuma	1954
Parnost	+

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

²⁵⁰Bk

Maseni broj	250
neutron number	153
Relativna Atomska Masa	250,078317195 ± 0,00000311 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	3,212 ± 0,005 h
spin	2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1954
Parnost	-

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

²⁵¹Bk

Maseni broj	251
neutron number	154
Relativna Atomska Masa	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
vrijeme otkrića ili izuma	1967
Parnost	-

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

²⁵²Bk

Maseni broj	252
neutron number	155
Relativna Atomska Masa	252,08431 ± 0,000215 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	1,8 ± 0,5 m
spin
nuclear quadrupole moment
vrijeme otkrića ili izuma	1988
Parnost

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

²⁵³Bk

Maseni broj	253
neutron number	156
Relativna Atomska Masa	253,08688 ± 0,000385 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	3/2
nuclear quadrupole moment
vrijeme otkrića ili izuma	1991
Parnost	-

decay mode	intensity
β⁻ (β⁻ decay)

²⁵⁴Bk

Maseni broj	254
neutron number	157
Relativna Atomska Masa	254,0906 ± 0,00032 Da
g-factor
natural abundance
radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin
nuclear quadrupole moment
vrijeme otkrića ili izuma
Parnost

decay mode	intensity
β⁻ (β⁻ decay)

povijest

otkrio/izumio	G.T.Seaborg, S.G.Tompson, A.Ghiorso
location of discovery	United States
vrijeme otkrića ili izuma	1949
Etimologija	Named after Berkeley, California the city of its discovery.
pronunciation	BURK-li-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

Berkelij on ChemicalAid

Berkelij (Bk)

Physical Property

Kemijsko Svojstvo

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

povijest

source

Nuclear Screening Constants

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