Einsteinium

Einsteinium (Es)

chemical element with the atomic number of 99
Atomic Number99
Atomic Weight252
Massagetal239
Group
Period7
Blockf
proton99 p+
neutron140 n0
elektron99 e-
Animated Bohr model of Es (Einsteinium)

Physical Property

Atoomradius
molar volume
Covalent Radius
165 pm
Metallic Radius
Ioonradius
111,6 pm
Crystal Radius
125,6 pm
Van der Waals radius
245 pm
density
8,84 g/cm³

Chemical Property

energie
proton affinity
electron affinity
ionization energy
ionization energy of Es (Einsteinium)
Verdampingswarmte
smeltingswarmte
Vormingsentalpie
133 kJ/mol
elektron
Elektronskil2, 8, 18, 32, 29, 8, 2
Bohr model: Es (Einsteinium)
Valenselektrone2
Lewisteorie: Es (Einsteinium)
elektronkonfigurasie[Rn] 5f11 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f11 7s2
Enhanced Bohr model of Es (Einsteinium)
Orbital Diagram of Es (Einsteinium)
Oksidasietoestand2, 3, 4
Elektronegatiwiteit
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
1 133,15 K
critical pressure
critical temperature
triple point
appearance
kleur
Colorless
appearancesilver-colored
Brekingsindeks
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Geleidingsvermoë
Elektriese resistiwiteit
superconductivity
Magnetisme
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal Structure ()
lattice constant
Lattice Angles
mechanical property
hardness
Massamodulus
Skuifmodulus
Young se modulus
Poisson se verhouding
Spoed van klank
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number43
Mendeleev Number34
Pettifor Number38
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
118 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
160
Neutron Mass Absorption
quantum number5I15/2
Ruimtegroep ()

Isotopes of Einsteinium

Stable Isotopes0
Unstable Isotopes20
Natural Isotopes0

239Es

Massagetal239
neutron number140
relative atomic mass
239,06831 ± 0,000322 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin3/2
nuclear quadrupole moment
ontdekkingsdatum
parity-

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

240Es

Massagetal240
neutron number141
relative atomic mass
240,068949 ± 0,000393 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
6 ± 1,7 s
spin4
nuclear quadrupole moment
ontdekkingsdatum2017
parity-

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

241Es

Massagetal241
neutron number142
relative atomic mass
241,068592 ± 0,000248 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
5,1 ± 0,8 s
spin3/2
nuclear quadrupole moment
ontdekkingsdatum1996
parity-

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

242Es

Massagetal242
neutron number143
relative atomic mass
242,069567 ± 0,000276 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
17,8 ± 1,6 s
spin2
nuclear quadrupole moment
ontdekkingsdatum1994
parity+

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

243Es

Massagetal243
neutron number144
relative atomic mass
243,069508 ± 0,000222 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
22,1 ± 1,4 s
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1973
parity+

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

244Es

Massagetal244
neutron number145
relative atomic mass
244,070881 ± 0,000195 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
37 ± 4 s
spin6
nuclear quadrupole moment
ontdekkingsdatum1973
parity+

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

245Es

Massagetal245
neutron number146
relative atomic mass
245,071192 ± 0,000178 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
1,11 ± 0,06 m
spin3/2
nuclear quadrupole moment
ontdekkingsdatum1967
parity-

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

246Es

Massagetal246
neutron number147
relative atomic mass
246,072806474 ± 0,000096538 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
7,5 ± 0,5 m
spin4
nuclear quadrupole moment
ontdekkingsdatum1954
parity-

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

247Es

Massagetal247
neutron number148
relative atomic mass
247,073621929 ± 0,00002087 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
4,55 ± 0,26 m
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1967
parity+

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

248Es

Massagetal248
neutron number149
relative atomic mass
248,075469 ± 0,000056 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
24 ± 3 m
spin2
nuclear quadrupole moment
ontdekkingsdatum1956
parity-

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

249Es

Massagetal249
neutron number150
relative atomic mass
249,076409 ± 0,000032 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
102,2 ± 0,6 m
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1956
parity+

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

250Es

Massagetal250
neutron number151
relative atomic mass
250,078611 ± 0,000107 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
8,6 ± 0,1 h
spin6
nuclear quadrupole moment
ontdekkingsdatum1956
parity

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

251Es

Massagetal251
neutron number152
relative atomic mass
251,079991431 ± 0,000005676 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
33 ± 1 h
spin3/2
nuclear quadrupole moment
ontdekkingsdatum1956
parity-

decay modeintensity
ϵ (electron capture)99.5%
α (α emission)0.5%

252Es

Massagetal252
neutron number153
relative atomic mass
252,082979173 ± 0,000053736 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
471,7 ± 1,9 d
spin4
nuclear quadrupole moment
ontdekkingsdatum1956
parity+

decay modeintensity
α (α emission)78%
ϵ (electron capture)22%

253Es

Massagetal253
neutron number154
relative atomic mass
253,084821241 ± 0,000001341 Da
g-factor
1,1714285714286 ± 0,02
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
20,47 ± 0,03 d
spin7/2
nuclear quadrupole moment
6,7 ± 0,8
ontdekkingsdatum1954
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)8.7%

254Es

Massagetal254
neutron number155
relative atomic mass
254,088024337 ± 0,000003152 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
275,7 ± 0,5 d
spin7
nuclear quadrupole moment
ontdekkingsdatum1954
parity+

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

255Es

Massagetal255
neutron number156
relative atomic mass
255,090273504 ± 0,000011612 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
39,8 ± 1,2 d
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1954
parity+

decay modeintensity
β (β decay)92%
α (α emission)8%
SF (spontaneous fission)0.0041%

256Es

Massagetal256
neutron number157
relative atomic mass
256,093597 ± 0,000107 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
7,6 h
spin7
nuclear quadrupole moment
ontdekkingsdatum1976
parity+

decay modeintensity
β (β decay)100%
β SF (β-delayed fission)0.002%

257Es

Massagetal257
neutron number158
relative atomic mass
257,095979 ± 0,000441 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
7,7 ± 0,2 d
spin7/2
nuclear quadrupole moment
ontdekkingsdatum1987
parity+

decay modeintensity
β (β decay)100%
α (α emission)

258Es

Massagetal258
neutron number159
relative atomic mass
258,09952 ± 0,00043 Da
g-factor
natural abundance
radioaktiwiteit☢️ radioactive element
Halfleeftyd
spin
nuclear quadrupole moment
ontdekkingsdatum
parity

decay modeintensity
β (β decay)
α (α emission)
Einsteinium

geskiedenis

Ontdek deurArgonne, Los Alamos, U of Calif
ligging van ontdekkingUnited States
ontdekkingsdatum1952
etimologieNamed in honor of the scientist Albert Einstein.
uitspraakine-STINE-i-em (Engels)

source

Abundance
Abundance in Earth's crust
natural abundance (oseaan)
natural abundance (human body)
0 %
natural abundance (Meteoroïde)
0 %
natural abundance (Son)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants