Einsteiniom (Es)

chemical element with the atomic number of 99

Atomic Number	99
Atomic Weight	252
Niver mas	239

Group
Period	7
Block	f

Proton	99 p⁺
Neutron	140 n⁰
Elektron	99 e^-

Physical Property

Atomic Radius
molar volume
Covalent Radius	165 pm 140 pm
Metallic Radius
ionic radius	111,6 pm
Crystal Radius	125,6 pm
Van der Waals radius	245 pm 329,9 pm
density	8,84 g/cm³

Chemical Property

energiezh

proton affinity
electron affinity
ionization energy	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

enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation	133 kJ/mol
Elektron

electron shell	2, 8, 18, 32, 29, 8, 2

valence electron	2 ⓘ

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

oxidation number	2, 3, 4
electronegativity	0.21427
Electrophilicity Index
fundamental state of matter

phase of matter	Solid
gaseous state of matter
Boiling Point
Melting Point	1 133,15 K
critical pressure
critical temperature
Poent tric'hement
appearance
liv	Colorless #ffffff #b31fd4 #b31fd4
appearance	silver-colored
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
electrical conductivity
electrical resistivity
superconductivity
Gwarellegezh
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
framm
Crystal Structure	{ERROR}
lattice constant
Lattice Angles
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
rummatadur
Category	Actinides, Actinides
CAS Group
IUPAC Group
Glawe Number	43
Mendeleev Number	34
Pettifor Number	38
Geochemical Class
Goldschmidt classification	synthetic

other

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

Isotopes of Einsteinium

Stable Isotopes	0
Unstable Isotopes	20
Natural Isotopes	0

²³⁹Es

Niver mas	239
niver a neutron	140
Relative Atomic Mass	239,06831 ± 0,000322 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	3/2
nuclear quadrupole moment
time of discovery or invention
parity	-

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

²⁴⁰Es

Niver mas	240
niver a neutron	141
Relative Atomic Mass	240,068949 ± 0,000393 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	6 ± 1,7 s
spin	4
nuclear quadrupole moment
time of discovery or invention	2017
parity	-

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

²⁴¹Es

Niver mas	241
niver a neutron	142
Relative Atomic Mass	241,068592 ± 0,000248 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	5,1 ± 0,8 s
spin	3/2
nuclear quadrupole moment
time of discovery or invention	1996
parity	-

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

²⁴²Es

Niver mas	242
niver a neutron	143
Relative Atomic Mass	242,069567 ± 0,000276 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	17,8 ± 1,6 s
spin	2
nuclear quadrupole moment
time of discovery or invention	1994
parity	+

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

²⁴³Es

Niver mas	243
niver a neutron	144
Relative Atomic Mass	243,069508 ± 0,000222 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	22,1 ± 1,4 s
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1973
parity	+

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

²⁴⁴Es

Niver mas	244
niver a neutron	145
Relative Atomic Mass	244,070881 ± 0,000195 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	37 ± 4 s
spin	6
nuclear quadrupole moment
time of discovery or invention	1973
parity	+

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

²⁴⁵Es

Niver mas	245
niver a neutron	146
Relative Atomic Mass	245,071192 ± 0,000178 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,11 ± 0,06 m
spin	3/2
nuclear quadrupole moment
time of discovery or invention	1967
parity	-

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

²⁴⁶Es

Niver mas	246
niver a neutron	147
Relative Atomic Mass	246,072806474 ± 0,000096538 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	7,5 ± 0,5 m
spin	4
nuclear quadrupole moment
time of discovery or invention	1954
parity	-

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

²⁴⁷Es

Niver mas	247
niver a neutron	148
Relative Atomic Mass	247,073621929 ± 0,00002087 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	4,55 ± 0,26 m
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1967
parity	+

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

²⁴⁸Es

Niver mas	248
niver a neutron	149
Relative Atomic Mass	248,075469 ± 0,000056 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	24 ± 3 m
spin	2
nuclear quadrupole moment
time of discovery or invention	1956
parity	-

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

²⁴⁹Es

Niver mas	249
niver a neutron	150
Relative Atomic Mass	249,076409 ± 0,000032 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	102,2 ± 0,6 m
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1956
parity	+

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

²⁵⁰Es

Niver mas	250
niver a neutron	151
Relative Atomic Mass	250,078611 ± 0,000107 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	8,6 ± 0,1 h
spin	6
nuclear quadrupole moment
time of discovery or invention	1956
parity

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

²⁵¹Es

Niver mas	251
niver a neutron	152
Relative Atomic Mass	251,079991431 ± 0,000005676 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	33 ± 1 h
spin	3/2
nuclear quadrupole moment
time of discovery or invention	1956
parity	-

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

²⁵²Es

Niver mas	252
niver a neutron	153
Relative Atomic Mass	252,082979173 ± 0,000053736 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	471,7 ± 1,9 d
spin	4
nuclear quadrupole moment
time of discovery or invention	1956
parity	+

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

²⁵³Es

Niver mas	253
niver a neutron	154
Relative Atomic Mass	253,084821241 ± 0,000001341 Da
g-factor	1,1714285714286 ± 0,02
natural abundance
radioactivity	☢️ radioactive element
half-life	20,47 ± 0,03 d
spin	7/2
nuclear quadrupole moment	6,7 ± 0,8
time of discovery or invention	1954
parity	+

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

²⁵⁴Es

Niver mas	254
niver a neutron	155
Relative Atomic Mass	254,088024337 ± 0,000003152 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	275,7 ± 0,5 d
spin	7
nuclear quadrupole moment
time of discovery or invention	1954
parity	+

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

²⁵⁵Es

Niver mas	255
niver a neutron	156
Relative Atomic Mass	255,090273504 ± 0,000011612 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	39,8 ± 1,2 d
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1954
parity	+

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

²⁵⁶Es

Niver mas	256
niver a neutron	157
Relative Atomic Mass	256,093597 ± 0,000107 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	7,6 h
spin	7
nuclear quadrupole moment
time of discovery or invention	1976
parity	+

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

²⁵⁷Es

Niver mas	257
niver a neutron	158
Relative Atomic Mass	257,095979 ± 0,000441 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	7,7 ± 0,2 d
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1987
parity	+

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

²⁵⁸Es

Niver mas	258
niver a neutron	159
Relative Atomic Mass	258,09952 ± 0,00043 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention
parity

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

istor

dizoloer pe ijiner	Argonne, Los Alamos, U of Calif
location of discovery	United States
time of discovery or invention	1952
Etimologiezh	Named in honor of the scientist Albert Einstein.
pronunciation	ine-STINE-i-em (saozneg)

mammenn

Abundance
Abundance in Earth's crust
natural abundance (meurvor)
natural abundance (human body)	0 %
natural abundance (meteoroid)	0 %
natural abundance (Heol)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Einsteiniom on ChemicalAid

Australian Educational Vocabulary ID	scot/3516
CAS Registry Number	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
Encyclopedia of China ID (Second Edition)	190938
Great Russian Encyclopedia Online ID	4940532
InChI	InChI=1S/Es
InChIKey	CKBRQZNRCSJHFT-UHFFFAOYSA-N
KBpedia ID	Einsteinium
MeSH descriptor ID	D004540
OmegaWiki Defined Meaning	157713
PubChem CID	23913
Römpp online ID	RD-05-00380
Store norske leksikon ID	einsteinium
Treccani ID	einstenio
UNII	WV8XL34X3O
USGS Thesaurus ID	1445
WordNet 3.1 Synset ID	14661000-n
anaouder Elhuyar ZTH	022704
anaouder Encyclopaedia Universalis	einsteinium
anaouder Encyclopædia Britannica enlinenn	science/einsteinium
anaouder Freebase	/m/028bh5n
anaouder GND	4151415-4
anaouder eus ar Gran Enciclopedia Catalana	0100433
pennad eus Vikidia e galleg	Einsteinium

Einsteiniom (Es)

Physical Property

Chemical Property

other

Isotopes of Einsteinium

239Es

240Es

241Es

242Es

243Es

244Es

245Es

246Es

247Es

248Es

249Es

250Es

251Es

252Es

253Es

254Es

255Es

256Es

257Es

258Es

istor

mammenn

Nuclear Screening Constants

²³⁹Es

²⁴⁰Es

²⁴¹Es

²⁴²Es

²⁴³Es

²⁴⁴Es

²⁴⁵Es

²⁴⁶Es

²⁴⁷Es

²⁴⁸Es

²⁴⁹Es

²⁵⁰Es

²⁵¹Es

²⁵²Es

²⁵³Es

²⁵⁴Es

²⁵⁵Es

²⁵⁶Es

²⁵⁷Es

²⁵⁸Es