Einsteinium (Es)

chemical element with the atomic number of 99

Atomic Number	99
Atomic Weight	252
Nombor jisim	239

Group
Period	7
Block	f

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

Sifat Fizikal

Jejari Atom
molar volume
Jejari kovalen	165 pm 140 pm
Metallic Radius
ionic radius	111.6 pm
Crystal Radius	125.6 pm
Jejari van der Waals	245 pm 329.9 pm
ketumpatan	8.84 g/cm³

Sifat Kimia

{ERROR}

tenaga

proton affinity
Pertalian elektron
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

Entalpi pengewapan
entalpi pelakuran
standard enthalpy of formation	133 kJ/mol
Elektron

Petala elektron	2, 8, 18, 32, 29, 8, 2

Elektron valens	2 ⓘ

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

Keadaan pengoksidaan	2, 3, 4
Keelektronegatifan	0.21427
Electrophilicity Index
keadaan jirim asas

fasa jirim
gaseous state of matter
Boiling Point
Melting Point	1,133.15 K
critical pressure
critical temperature
triple point
rupa
warna	Black #ffffff #b31fd4 #b31fd4
rupa	silver-colored
indeks biasan
sifat bahan
Thermal Conductivity
Pengembangan terma
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Kekonduksian elektrik
Kerintangan dan kekonduksian elektrik
Kesuperkonduksian
kemagnetan
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal Structure	{ERROR}
lattice constant
Lattice Angles
mechanical property
hardness
Modulus pukal
shear modulus
Young's modulus
Nisbah Poisson
Kelajuan bunyi
pengelasan
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
Nombor kuantum	5I15/2
space group	()

Isotopes of Einsteinium

Stable Isotopes	0
Unstable Isotopes	20
Natural Isotopes	0

²³⁹Es

Nombor jisim	239
nombor neutron	140
Jisim Atom Relatif	239.06831 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin	3/2
nuclear quadrupole moment
tarikh penemuan
parity	-

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

²⁴⁰Es

Nombor jisim	240
nombor neutron	141
Jisim Atom Relatif	240.068949 ± 0.000393 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	6 ± 1.7 s
Spin	4
nuclear quadrupole moment
tarikh penemuan	2017
parity	-

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

²⁴¹Es

Nombor jisim	241
nombor neutron	142
Jisim Atom Relatif	241.068592 ± 0.000248 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	5.1 ± 0.8 s
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1996
parity	-

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

²⁴²Es

Nombor jisim	242
nombor neutron	143
Jisim Atom Relatif	242.069567 ± 0.000276 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	17.8 ± 1.6 s
Spin	2
nuclear quadrupole moment
tarikh penemuan	1994
parity	+

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

²⁴³Es

Nombor jisim	243
nombor neutron	144
Jisim Atom Relatif	243.069508 ± 0.000222 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	22.1 ± 1.4 s
Spin	7/2
nuclear quadrupole moment
tarikh penemuan	1973
parity	+

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

²⁴⁴Es

Nombor jisim	244
nombor neutron	145
Jisim Atom Relatif	244.070881 ± 0.000195 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	37 ± 4 s
Spin	6
nuclear quadrupole moment
tarikh penemuan	1973
parity	+

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

²⁴⁵Es

Nombor jisim	245
nombor neutron	146
Jisim Atom Relatif	245.071192 ± 0.000178 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1.11 ± 0.06 m
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1967
parity	-

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

²⁴⁶Es

Nombor jisim	246
nombor neutron	147
Jisim Atom Relatif	246.072806474 ± 0.000096538 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	7.5 ± 0.5 m
Spin	4
nuclear quadrupole moment
tarikh penemuan	1954
parity	-

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

²⁴⁷Es

Nombor jisim	247
nombor neutron	148
Jisim Atom Relatif	247.073621929 ± 0.00002087 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	4.55 ± 0.26 m
Spin	7/2
nuclear quadrupole moment
tarikh penemuan	1967
parity	+

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

²⁴⁸Es

Nombor jisim	248
nombor neutron	149
Jisim Atom Relatif	248.075469 ± 0.000056 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	24 ± 3 m
Spin	2
nuclear quadrupole moment
tarikh penemuan	1956
parity	-

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

²⁴⁹Es

Nombor jisim	249
nombor neutron	150
Jisim Atom Relatif	249.076409 ± 0.000032 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	102.2 ± 0.6 m
Spin	7/2
nuclear quadrupole moment
tarikh penemuan	1956
parity	+

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

²⁵⁰Es

Nombor jisim	250
nombor neutron	151
Jisim Atom Relatif	250.078611 ± 0.000107 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	8.6 ± 0.1 h
Spin	6
nuclear quadrupole moment
tarikh penemuan	1956
parity

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

²⁵¹Es

Nombor jisim	251
nombor neutron	152
Jisim Atom Relatif	251.079991431 ± 0.000005676 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	33 ± 1 h
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1956
parity	-

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

²⁵²Es

Nombor jisim	252
nombor neutron	153
Jisim Atom Relatif	252.082979173 ± 0.000053736 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	471.7 ± 1.9 d
Spin	4
nuclear quadrupole moment
tarikh penemuan	1956
parity	+

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

²⁵³Es

Nombor jisim	253
nombor neutron	154
Jisim Atom Relatif	253.084821241 ± 0.000001341 Da
g-factor	1.1714285714286 ± 0.02
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	20.47 ± 0.03 d
Spin	7/2
nuclear quadrupole moment	6.7 ± 0.8
tarikh penemuan	1954
parity	+

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

²⁵⁴Es

Nombor jisim	254
nombor neutron	155
Jisim Atom Relatif	254.088024337 ± 0.000003152 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	275.7 ± 0.5 d
Spin	7
nuclear quadrupole moment
tarikh penemuan	1954
parity	+

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

²⁵⁵Es

Nombor jisim	255
nombor neutron	156
Jisim Atom Relatif	255.090273504 ± 0.000011612 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	39.8 ± 1.2 d
Spin	7/2
nuclear quadrupole moment
tarikh penemuan	1954
parity	+

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

²⁵⁶Es

Nombor jisim	256
nombor neutron	157
Jisim Atom Relatif	256.093597 ± 0.000107 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	7.6 h
Spin	7
nuclear quadrupole moment
tarikh penemuan	1976
parity	+

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

²⁵⁷Es

Nombor jisim	257
nombor neutron	158
Jisim Atom Relatif	257.095979 ± 0.000441 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	7.7 ± 0.2 d
Spin	7/2
nuclear quadrupole moment
tarikh penemuan	1987
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%
α (α emission)

²⁵⁸Es

Nombor jisim	258
nombor neutron	159
Jisim Atom Relatif	258.09952 ± 0.00043 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin
nuclear quadrupole moment
tarikh penemuan
parity

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)
α (α emission)

sejarah

penemu atau pereka	Argonne, Los Alamos, U of Calif
tempat penemuan	United States
tarikh penemuan	1952
Etimologi	Named in honor of the scientist Albert Einstein.
sebutan	ine-STINE-i-em (Inggeris)

sumber

Abundance
Abundance in Earth's crust
natural abundance (lautan)
natural abundance (Tubuh manusia)	0 %
natural abundance (Meteoroid)	0 %
natural abundance (Matahari)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Einsteinium on ChemicalAid

Einsteinium (Es)

Sifat Fizikal

Sifat Kimia

other

Isotopes of Einsteinium

239Es

240Es

241Es

242Es

243Es

244Es

245Es

246Es

247Es

248Es

249Es

250Es

251Es

252Es

253Es

254Es

255Es

256Es

257Es

258Es

sejarah

sumber

Nuclear Screening Constants

²³⁹Es

²⁴⁰Es

²⁴¹Es

²⁴²Es

²⁴³Es

²⁴⁴Es

²⁴⁵Es

²⁴⁶Es

²⁴⁷Es

²⁴⁸Es

²⁴⁹Es

²⁵⁰Es

²⁵¹Es

²⁵²Es

²⁵³Es

²⁵⁴Es

²⁵⁵Es

²⁵⁶Es

²⁵⁷Es

²⁵⁸Es