Einsteinium (Es)

chemical element with the atomic number of 99

Atomic Number	99
Atomic Weight	252
massiarv	239

Group
Period	7
Block	f

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

Animated Bohri aatomiteooria of Es (Einsteinium)

Füüsikalised Omadused

Aatomiraadius
molaarruumala
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

Keemilised Omadused

{ERROR}

energia

proton affinity
Elektronafiinsus
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

aurustumissoojus
sulamissoojus
standard enthalpy of formation	133 kJ/mol
elektron

elektronkiht	2, 8, 18, 32, 29, 8, 2

valentselektron	2 ⓘ

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

oksüdatsiooniaste	2, 3, 4
elektronegatiivsus	0.21427
Electrophilicity Index
fundamental state of matter

phase of matter
gaseous state of matter
Boiling Point
Melting Point	1 133,15 K
critical pressure
critical temperature
kolmikpunkt
Välimus
värvus	Black #ffffff #b31fd4 #b31fd4
Välimus	silver-colored
Murdumisnäitaja
thermodynamic material property
Thermal Conductivity
soojuspaisumine
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Elektrijuhtivus
Eritakistus
Ülijuhtivus
Magnetism
type
Magnetiline vastuvõtlikkus (Mass)
Magnetiline vastuvõtlikkus (Molar)
Magnetiline vastuvõtlikkus (Volume)
magnetic ordering
Curie punkt
Néel temperature
struktuur
Crystal Structure	{ERROR}
lattice constant
Lattice Angles
mechanical property
kõvadus
Ruumpaisumismoodul
Nihkeelastsusmoodul
Normaalelastsusmoodul
Poissoni tegur
heli kiirus
Klassifitseerimine
Category	Actinides, Actinides
CAS Group
IUPAC Group
Glawe Number	43
Mendeleev Number	34
Pettifor Number	38
Geochemical Class
Goldschmidt classification	synthetic

teine

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

Isotopes of Einsteinium

Stable Isotopes	0
Unstable Isotopes	20
Natural Isotopes	0

²³⁹Es

massiarv	239
neutron number	140
Relative Atomic Mass	239,06831 ± 0,000322 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg
spinn	3/2
nuclear quadrupole moment
avastamise aeg
parity	-

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

²⁴⁰Es

massiarv	240
neutron number	141
Relative Atomic Mass	240,068949 ± 0,000393 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	6 ± 1,7 s
spinn	4
nuclear quadrupole moment
avastamise aeg	2017
parity	-

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

²⁴¹Es

massiarv	241
neutron number	142
Relative Atomic Mass	241,068592 ± 0,000248 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	5,1 ± 0,8 s
spinn	3/2
nuclear quadrupole moment
avastamise aeg	1996
parity	-

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

²⁴²Es

massiarv	242
neutron number	143
Relative Atomic Mass	242,069567 ± 0,000276 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	17,8 ± 1,6 s
spinn	2
nuclear quadrupole moment
avastamise aeg	1994
parity	+

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

²⁴³Es

massiarv	243
neutron number	144
Relative Atomic Mass	243,069508 ± 0,000222 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	22,1 ± 1,4 s
spinn	7/2
nuclear quadrupole moment
avastamise aeg	1973
parity	+

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

²⁴⁴Es

massiarv	244
neutron number	145
Relative Atomic Mass	244,070881 ± 0,000195 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	37 ± 4 s
spinn	6
nuclear quadrupole moment
avastamise aeg	1973
parity	+

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

²⁴⁵Es

massiarv	245
neutron number	146
Relative Atomic Mass	245,071192 ± 0,000178 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	1,11 ± 0,06 m
spinn	3/2
nuclear quadrupole moment
avastamise aeg	1967
parity	-

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

²⁴⁶Es

massiarv	246
neutron number	147
Relative Atomic Mass	246,072806474 ± 0,000096538 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	7,5 ± 0,5 m
spinn	4
nuclear quadrupole moment
avastamise aeg	1954
parity	-

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

²⁴⁷Es

massiarv	247
neutron number	148
Relative Atomic Mass	247,073621929 ± 0,00002087 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	4,55 ± 0,26 m
spinn	7/2
nuclear quadrupole moment
avastamise aeg	1967
parity	+

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

²⁴⁸Es

massiarv	248
neutron number	149
Relative Atomic Mass	248,075469 ± 0,000056 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	24 ± 3 m
spinn	2
nuclear quadrupole moment
avastamise aeg	1956
parity	-

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

²⁴⁹Es

massiarv	249
neutron number	150
Relative Atomic Mass	249,076409 ± 0,000032 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	102,2 ± 0,6 m
spinn	7/2
nuclear quadrupole moment
avastamise aeg	1956
parity	+

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

²⁵⁰Es

massiarv	250
neutron number	151
Relative Atomic Mass	250,078611 ± 0,000107 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	8,6 ± 0,1 h
spinn	6
nuclear quadrupole moment
avastamise aeg	1956
parity

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

²⁵¹Es

massiarv	251
neutron number	152
Relative Atomic Mass	251,079991431 ± 0,000005676 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	33 ± 1 h
spinn	3/2
nuclear quadrupole moment
avastamise aeg	1956
parity	-

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

²⁵²Es

massiarv	252
neutron number	153
Relative Atomic Mass	252,082979173 ± 0,000053736 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	471,7 ± 1,9 d
spinn	4
nuclear quadrupole moment
avastamise aeg	1956
parity	+

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

²⁵³Es

massiarv	253
neutron number	154
Relative Atomic Mass	253,084821241 ± 0,000001341 Da
g-factor	1,1714285714286 ± 0,02
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	20,47 ± 0,03 d
spinn	7/2
nuclear quadrupole moment	6,7 ± 0,8
avastamise aeg	1954
parity	+

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

²⁵⁴Es

massiarv	254
neutron number	155
Relative Atomic Mass	254,088024337 ± 0,000003152 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	275,7 ± 0,5 d
spinn	7
nuclear quadrupole moment
avastamise aeg	1954
parity	+

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

²⁵⁵Es

massiarv	255
neutron number	156
Relative Atomic Mass	255,090273504 ± 0,000011612 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	39,8 ± 1,2 d
spinn	7/2
nuclear quadrupole moment
avastamise aeg	1954
parity	+

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

²⁵⁶Es

massiarv	256
neutron number	157
Relative Atomic Mass	256,093597 ± 0,000107 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	7,6 h
spinn	7
nuclear quadrupole moment
avastamise aeg	1976
parity	+

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

²⁵⁷Es

massiarv	257
neutron number	158
Relative Atomic Mass	257,095979 ± 0,000441 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg	7,7 ± 0,2 d
spinn	7/2
nuclear quadrupole moment
avastamise aeg	1987
parity	+

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

²⁵⁸Es

massiarv	258
neutron number	159
Relative Atomic Mass	258,09952 ± 0,00043 Da
g-factor
natural abundance
radioaktiivsus	☢️ radioactive element
Poolestusaeg
spinn
nuclear quadrupole moment
avastamise aeg
parity

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

ajalugu

leiutaja või avastaja	Argonne, Los Alamos, U of Calif
location of discovery	United States
avastamise aeg	1952
etümoloogia	Named in honor of the scientist Albert Einstein.
pronunciation	ine-STINE-i-em (inglise)

allikas

Abundance
Abundance in Earth's crust
natural abundance (ookean)
natural abundance (Inimkeha)	0 %
natural abundance (meteoorkeha)	0 %
natural abundance (Päike)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Einsteinium on ChemicalAid

Einsteinium (Es)

Füüsikalised Omadused

Keemilised Omadused

teine

Isotopes of Einsteinium

239Es

240Es

241Es

242Es

243Es

244Es

245Es

246Es

247Es

248Es

249Es

250Es

251Es

252Es

253Es

254Es

255Es

256Es

257Es

258Es

ajalugu

allikas

Nuclear Screening Constants

²³⁹Es

²⁴⁰Es

²⁴¹Es

²⁴²Es

²⁴³Es

²⁴⁴Es

²⁴⁵Es

²⁴⁶Es

²⁴⁷Es

²⁴⁸Es

²⁴⁹Es

²⁵⁰Es

²⁵¹Es

²⁵²Es

²⁵³Es

²⁵⁴Es

²⁵⁵Es

²⁵⁶Es

²⁵⁷Es

²⁵⁸Es