Einsteinyu

Einsteinyu (Es)

chemical element with the atomic number of 99
Atomic Number99
Atomic Weight252
mass number239
Group
Period7
Blockf
Prutun99 p+
Niwtrun140 n0
Iliktrun99 e-
Animated Bohr model of Es (Einsteinyu)

Physical Property

Atomic Radius
molar volume
covalent radius
165 pm
Metallic Radius
ionic radius
111.6 pm
Crystal Radius
125.6 pm
Van der Waals radius
245 pm
density
8.84 g/cm³

Chemical Property

micha
proton affinity
electron affinity
ionization energy
ionization energy of Es (Einsteinyu)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
133 kJ/mol
Iliktrun
Iñuku hawa2, 8, 18, 32, 29, 8, 2
Bohr model: Es (Einsteinyu)
valence electron2
Lewis structure: Es (Einsteinyu)
electron configuration[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 (Einsteinyu)
Orbital Diagram of Es (Einsteinyu)
oxidation number2, 3, 4
electronegativity
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
Llimphi
Colorless
appearancesilver-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
Llut'ariy
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
Pawa
Crystal Structure ()
lattice constant
Lattice Angles
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
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
space group ()

Isotopes of Einsteinium

Stable Isotopes0
Unstable Isotopes20
Natural Isotopes0

239Es

mass number239
neutron number140
relative atomic mass
239.06831 ± 0.000322 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
spin3/2
nuclear quadrupole moment
time of discovery or invention
parity-

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

240Es

mass number240
neutron number141
relative atomic mass
240.068949 ± 0.000393 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
6 ± 1.7 s
spin4
nuclear quadrupole moment
time of discovery or invention2017
parity-

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

241Es

mass number241
neutron number142
relative atomic mass
241.068592 ± 0.000248 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
5.1 ± 0.8 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1996
parity-

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

242Es

mass number242
neutron number143
relative atomic mass
242.069567 ± 0.000276 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
17.8 ± 1.6 s
spin2
nuclear quadrupole moment
time of discovery or invention1994
parity+

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

243Es

mass number243
neutron number144
relative atomic mass
243.069508 ± 0.000222 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
22.1 ± 1.4 s
spin7/2
nuclear quadrupole moment
time of discovery or invention1973
parity+

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

244Es

mass number244
neutron number145
relative atomic mass
244.070881 ± 0.000195 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
37 ± 4 s
spin6
nuclear quadrupole moment
time of discovery or invention1973
parity+

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

245Es

mass number245
neutron number146
relative atomic mass
245.071192 ± 0.000178 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
1.11 ± 0.06 m
spin3/2
nuclear quadrupole moment
time of discovery or invention1967
parity-

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

246Es

mass number246
neutron number147
relative atomic mass
246.072806474 ± 0.000096538 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
7.5 ± 0.5 m
spin4
nuclear quadrupole moment
time of discovery or invention1954
parity-

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

247Es

mass number247
neutron number148
relative atomic mass
247.073621929 ± 0.00002087 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
4.55 ± 0.26 m
spin7/2
nuclear quadrupole moment
time of discovery or invention1967
parity+

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

248Es

mass number248
neutron number149
relative atomic mass
248.075469 ± 0.000056 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
24 ± 3 m
spin2
nuclear quadrupole moment
time of discovery or invention1956
parity-

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

249Es

mass number249
neutron number150
relative atomic mass
249.076409 ± 0.000032 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
102.2 ± 0.6 m
spin7/2
nuclear quadrupole moment
time of discovery or invention1956
parity+

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

250Es

mass number250
neutron number151
relative atomic mass
250.078611 ± 0.000107 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
8.6 ± 0.1 h
spin6
nuclear quadrupole moment
time of discovery or invention1956
parity

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

251Es

mass number251
neutron number152
relative atomic mass
251.079991431 ± 0.000005676 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
33 ± 1 h
spin3/2
nuclear quadrupole moment
time of discovery or invention1956
parity-

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

252Es

mass number252
neutron number153
relative atomic mass
252.082979173 ± 0.000053736 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
471.7 ± 1.9 d
spin4
nuclear quadrupole moment
time of discovery or invention1956
parity+

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

253Es

mass number253
neutron number154
relative atomic mass
253.084821241 ± 0.000001341 Da
g-factor
1.1714285714286 ± 0.02
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
20.47 ± 0.03 d
spin7/2
nuclear quadrupole moment
6.7 ± 0.8
time of discovery or invention1954
parity+

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

254Es

mass number254
neutron number155
relative atomic mass
254.088024337 ± 0.000003152 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
275.7 ± 0.5 d
spin7
nuclear quadrupole moment
time of discovery or invention1954
parity+

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

255Es

mass number255
neutron number156
relative atomic mass
255.090273504 ± 0.000011612 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
39.8 ± 1.2 d
spin7/2
nuclear quadrupole moment
time of discovery or invention1954
parity+

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

256Es

mass number256
neutron number157
relative atomic mass
256.093597 ± 0.000107 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
7.6 h
spin7
nuclear quadrupole moment
time of discovery or invention1976
parity+

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

257Es

mass number257
neutron number158
relative atomic mass
257.095979 ± 0.000441 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
7.7 ± 0.2 d
spin7/2
nuclear quadrupole moment
time of discovery or invention1987
parity+

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

258Es

mass number258
neutron number159
relative atomic mass
258.09952 ± 0.00043 Da
g-factor
natural abundance
Illanchaykuy☢️ radioactive element
Kuskan ismuykuy mit'a
spin
nuclear quadrupole moment
time of discovery or invention
parity

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

wiñay kawsay

discoverer or inventorArgonne, Los Alamos, U of Calif
location of discoveryUnited States
time of discovery or invention1952
etymologyNamed in honor of the scientist Albert Einstein.
pronunciationine-STINE-i-em (Ingles Simi)

source

Abundance
Abundance in Earth's crust
natural abundance (Mama qucha)
natural abundance (human body)
0 %
natural abundance (meteoroid)
0 %
natural abundance (Inti)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants