Einsteinium (Es)

grundstof med atomnummer 99

Atomnummer	99
Atommasse	252
mass number	239

Gruppe
Periode	7
Blok	f

proton	99 p⁺
neutron	140 n⁰
elektron	99 e^-

Animated Bohrs atommodel of Es (Einsteinium)

Fysisk Egenskab

Atomradius
molar volume
Kovalent Radius	165 pm 140 pm
Metallic Radius
Ionisk radius	111,6 pm
Crystal Radius	125,6 pm
Van der Waals-radius	245 pm 329,9 pm
massefylde	8,84 g/cm³

Kemisk Egenskab

energi

proton affinity
electron affinity
ioniseringsenergi	6,3676 eV/particle 12,2 eV/particle 22,7 eV/particle 38,8 eV/particle 54,1 eV/particle 71 eV/particle 97 eV/particle 112,9 eV/particle 137 eV/particle 157 eV/particle 180 eV/particle 206 eV/particle 231 eV/particle 252 eV/particle 270 eV/particle 294 eV/particle 317 eV/particle 342 eV/particle 367 eV/particle 398 eV/particle 421 eV/particle 576 eV/particle 606 eV/particle 638 eV/particle 672 eV/particle 705 eV/particle 738 eV/particle 790 eV/particle 824 eV/particle 861 eV/particle 895 eV/particle 1.060 eV/particle 1.100 eV/particle 1.140 eV/particle 1.180 eV/particle 1.310 eV/particle 1.360 eV/particle 1.480 eV/particle 1.530 eV/particle 1.690 eV/particle 1.780 eV/particle 1.870 eV/particle 1.950 eV/particle 2.040 eV/particle 2.130 eV/particle 2.220 eV/particle 2.300 eV/particle 2.410 eV/particle 2.490 eV/particle 2.580 eV/particle 2.680 eV/particle 2.760 eV/particle 2.900 eV/particle 3.294 eV/particle 3.370 eV/particle 3.449 eV/particle 3.535 eV/particle 3.616 eV/particle 3.694 eV/particle 3.866 eV/particle 3.947 eV/particle 4.038 eV/particle 4.120 eV/particle 4.456 eV/particle 4.537 eV/particle 4.620 eV/particle 4.700 eV/particle 5.260 eV/particle 5.350 eV/particle 5.600 eV/particle 5.690 eV/particle 8.960 eV/particle 9.140 eV/particle 9.330 eV/particle 9.530 eV/particle 9.720 eV/particle 9.910 eV/particle 10.400 eV/particle 10.590 eV/particle 10.810 eV/particle 11.010 eV/particle 11.570 eV/particle 11.740 eV/particle 11.930 eV/particle 12.110 eV/particle 13.810 eV/particle 14.030 eV/particle 14.460 eV/particle 14.700 eV/particle 29.700 eV/particle 30.100 eV/particle 30.700 eV/particle 31.100 eV/particle 37.400 eV/particle 38.100 eV/particle 38.900 eV/particle 39.451,4 eV/particle 154.328 eV/particle 156.926 eV/particle

Fordampningsvarme
smeltevarme
standard enthalpy of formation	133 kJ/mol
elektron

Elektronskal	2, 8, 18, 32, 29, 8, 2

Valenselektron	2 ⓘ

electron configuration	[Rn] 5f¹¹ 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f¹¹ 7s²

Oxidationstrin	2, 3, 4
Elektronegativitet	0.21427
Electrophilicity Index
fundamental state of matter

stoffase	Fast stof
gaseous state of matter
Kogepunkt
Smeltepunkt	1.133,15 K
critical pressure
critical temperature
trippelpunkt
appearance
farve	Colorless #ffffff #b31fd4 #b31fd4
appearance	silver-colored
Brydningsindeks
materialeegenskab
Varmeledningsevne
Termisk ekspansion
molar heat capacity
Varmefylde
Adiabateksponenten
electrical properties
type
specifik ledningsevne
Elektrisk resistivitet
superledning
Magnetisme
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curietemperaturen
Néel temperature
struktur
Krystalstruktur	()
lattice constant
Lattice Angles
mechanical property
hårdhed
Kompressibilitetsmodul
Forskydningsmodul
E-modul
Poissons forhold
speed of sound
klassificering
Kategori	Actinider, Actinides
CAS Group
IUPAC Group
Glawe Number	43
Mendeleev Number	34
Pettifor Number	38
Geochemical Class
Goldschmidt classification	synthetic

øvrige

Gas Basicity
polarizability	118 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section	160
Neutron Mass Absorption
quantum number	5I15/2
rumgruppe	()

Isotopes of Einsteinium

Stable Isotopes	0
Unstable Isotopes	20
Natural Isotopes	0

²³⁹Es

mass number	239
neutron number	140
Relative Atomic Mass	239,06831 ± 0,000322 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	3/2
nuclear quadrupole moment
opdagelsesdato
Paritet	-

decay mode	Intensitet
α (α emission)
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)
SF (spontaneous fission)

²⁴⁰Es

mass number	240
neutron number	141
Relative Atomic Mass	240,068949 ± 0,000393 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	6 ± 1,7 s
spin	4
nuclear quadrupole moment
opdagelsesdato	2017
Paritet	-

decay mode	Intensitet
α (α emission)	70%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	30%
β⁺ SF (β⁺-delayed fission)	0.16%

²⁴¹Es

mass number	241
neutron number	142
Relative Atomic Mass	241,068592 ± 0,000248 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	5,1 ± 0,8 s
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1996
Paritet	-

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

²⁴²Es

mass number	242
neutron number	143
Relative Atomic Mass	242,069567 ± 0,000276 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	17,8 ± 1,6 s
spin	2
nuclear quadrupole moment
opdagelsesdato	1994
Paritet	+

decay mode	Intensitet
α (α emission)	57%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	43%
β⁺ SF (β⁺-delayed fission)	0.6%

²⁴³Es

mass number	243
neutron number	144
Relative Atomic Mass	243,069508 ± 0,000222 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	22,1 ± 1,4 s
spin	7/2
nuclear quadrupole moment
opdagelsesdato	1973
Paritet	+

decay mode	Intensitet
α (α emission)	61%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)
SF (spontaneous fission)	1%

²⁴⁴Es

mass number	244
neutron number	145
Relative Atomic Mass	244,070881 ± 0,000195 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	37 ± 4 s
spin	6
nuclear quadrupole moment
opdagelsesdato	1973
Paritet	+

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	95%
α (α emission)	5%
β⁺ SF (β⁺-delayed fission)	0.011%

²⁴⁵Es

mass number	245
neutron number	146
Relative Atomic Mass	245,071192 ± 0,000178 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	1,11 ± 0,06 m
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1967
Paritet	-

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	51%
α (α emission)	49%

²⁴⁶Es

mass number	246
neutron number	147
Relative Atomic Mass	246,072806474 ± 0,000096538 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	7,5 ± 0,5 m
spin	4
nuclear quadrupole moment
opdagelsesdato	1954
Paritet	-

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	90.1%
α (α emission)	9.9%
β⁺ SF (β⁺-delayed fission)	0.003%

²⁴⁷Es

mass number	247
neutron number	148
Relative Atomic Mass	247,073621929 ± 0,00002087 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	4,55 ± 0,26 m
spin	7/2
nuclear quadrupole moment
opdagelsesdato	1967
Paritet	+

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	93%
α (α emission)	7%
SF (spontaneous fission)

²⁴⁸Es

mass number	248
neutron number	149
Relative Atomic Mass	248,075469 ± 0,000056 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	24 ± 3 m
spin	2
nuclear quadrupole moment
opdagelsesdato	1956
Paritet	-

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)	0.25%
β⁺ SF (β⁺-delayed fission)	3.5%

²⁴⁹Es

mass number	249
neutron number	150
Relative Atomic Mass	249,076409 ± 0,000032 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	102,2 ± 0,6 m
spin	7/2
nuclear quadrupole moment
opdagelsesdato	1956
Paritet	+

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)	0.57%

²⁵⁰Es

mass number	250
neutron number	151
Relative Atomic Mass	250,078611 ± 0,000107 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	8,6 ± 0,1 h
spin	6
nuclear quadrupole moment
opdagelsesdato	1956
Paritet

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

²⁵¹Es

mass number	251
neutron number	152
Relative Atomic Mass	251,079991431 ± 0,000005676 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	33 ± 1 h
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1956
Paritet	-

decay mode	Intensitet
ϵ (electron capture)	99.5%
α (α emission)	0.5%

²⁵²Es

mass number	252
neutron number	153
Relative Atomic Mass	252,082979173 ± 0,000053736 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	471,7 ± 1,9 d
spin	4
nuclear quadrupole moment
opdagelsesdato	1956
Paritet	+

decay mode	Intensitet
α (α emission)	78%
ϵ (electron capture)	22%

²⁵³Es

mass number	253
neutron number	154
Relative Atomic Mass	253,084821241 ± 0,000001341 Da
g-factor	1,1714285714286 ± 0,02
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	20,47 ± 0,03 d
spin	7/2
nuclear quadrupole moment	6,7 ± 0,8
opdagelsesdato	1954
Paritet	+

decay mode	Intensitet
α (α emission)	100%
SF (spontaneous fission)	8.7%

²⁵⁴Es

mass number	254
neutron number	155
Relative Atomic Mass	254,088024337 ± 0,000003152 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	275,7 ± 0,5 d
spin	7
nuclear quadrupole moment
opdagelsesdato	1954
Paritet	+

decay mode	Intensitet
α (α emission)	100%
ϵ (electron capture)
β⁻ (β⁻ decay)	1.74%
SF (spontaneous fission)	3%

²⁵⁵Es

mass number	255
neutron number	156
Relative Atomic Mass	255,090273504 ± 0,000011612 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	39,8 ± 1,2 d
spin	7/2
nuclear quadrupole moment
opdagelsesdato	1954
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	92%
α (α emission)	8%
SF (spontaneous fission)	0.0041%

²⁵⁶Es

mass number	256
neutron number	157
Relative Atomic Mass	256,093597 ± 0,000107 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	7,6 h
spin	7
nuclear quadrupole moment
opdagelsesdato	1976
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
β⁻ SF (β⁻-delayed fission)	0.002%

²⁵⁷Es

mass number	257
neutron number	158
Relative Atomic Mass	257,095979 ± 0,000441 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	7,7 ± 0,2 d
spin	7/2
nuclear quadrupole moment
opdagelsesdato	1987
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%
α (α emission)

²⁵⁸Es

mass number	258
neutron number	159
Relative Atomic Mass	258,09952 ± 0,00043 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin
nuclear quadrupole moment
opdagelsesdato
Paritet

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

historie

opdager eller opfinder	Argonne, Los Alamos, U of Calif
fundsted	United States
opdagelsesdato	1952
etymologi	Named in honor of the scientist Albert Einstein.
udtale	ine-STINE-i-em (engelsk)

source

Forekomst
Abundance in Earth's crust
natural abundance (verdenshave)
natural abundance (menneskelige krop)	0 %
natural abundance (Meteoroid)	0 %
natural abundance (Solen)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Einsteinium on ChemicalAid

Australian Educational Vocabulary ID	scot/3516
CAS-nummer	7429-92-7
ChEBI-ID	33393
ChemSpider ID	22356
DSSTOX compound identifier	DTXCID90147796
DSSTox substance ID	DTXSID30225305
Den Store Danske-ID	einsteinium
Dizionario delle Scienze Fisiche ID	einsteinio
Elhuyar ZTH ID	022704
Enciclopedia Treccani	einstenio
Encyclopedia of China ID (Second Edition)	190938
Encyclopædia Britannica Online-ID	science/einsteinium
Encyclopædia Universalis-ID	einsteinium
Freebase-ID	/m/028bh5n
French Vikidia ID	Einsteinium
GND-identifikator	4151415-4
InChI	InChI=1S/Es
InChIKey	CKBRQZNRCSJHFT-UHFFFAOYSA-N
KBpedia ID	Einsteinium
MeSH ID	D004540
OmegaWiki-betydningsdefinition	157713
PubChem CID	23913
Römpp online ID	RD-05-00380
Store katalanske encyklopædi-ID	0100433
Store norske leksikon-ID	einsteinium
Store russiske encyklopædi Online-ID	4940532
UNII	WV8XL34X3O
USGS Thesaurus ID	1445
WordNet 3.1 Synset ID	14661000-n

Einsteinium (Es)

Fysisk Egenskab

Kemisk Egenskab

øvrige

Isotopes of Einsteinium

239Es

240Es

241Es

242Es

243Es

244Es

245Es

246Es

247Es

248Es

249Es

250Es

251Es

252Es

253Es

254Es

255Es

256Es

257Es

258Es

historie

source

Nuclear Screening Constants

²³⁹Es

²⁴⁰Es

²⁴¹Es

²⁴²Es

²⁴³Es

²⁴⁴Es

²⁴⁵Es

²⁴⁶Es

²⁴⁷Es

²⁴⁸Es

²⁴⁹Es

²⁵⁰Es

²⁵¹Es

²⁵²Es

²⁵³Es

²⁵⁴Es

²⁵⁵Es

²⁵⁶Es

²⁵⁷Es

²⁵⁸Es