Evropiyûm

Evropiyûm (Eu)

chemical element with atomic number of 63
Atomic Number63
Atomic Weight151.964
Hejmara baristeyî153
Group
Period6
Blockf
Proton63 p+
Notron90 n0
Kareva63 e-
Animated Bohr model of Eu (Evropiyûm)

Physical Property

Atomic Radius
185 pm
molar volume
Covalent Radius
168 pm
Metallic Radius
ionic radius
117 pm
Crystal Radius
131 pm
Van der Waals radius
235 pm
density
5,24 g/cm³
Atomic Radii Of The Elements: Evropiyûm0102030405060708090100110120130140150160170180190200210220230240pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

wize
proton affinity
electron affinity
ionization energy
5,670385 eV/particle
ionization energy of Eu (Evropiyûm)
enthalpy of vaporization
176 kJ/mol
enthalpy of fusion
standard enthalpy of formation
177,4 kJ/mol
Kareva
electron shell2, 8, 18, 25, 8, 2
Bohr model: Eu (Evropiyûm)
valence electron2
Lewis structure: Eu (Evropiyûm)
electron configuration[Xe] 4f7 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f7 6s2
Enhanced Bohr model of Eu (Evropiyûm)
Orbital Diagram of Eu (Evropiyûm)
oxidation number0, 2, 3
electronegativity
Electrophilicity Index
1,1104548254099753 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
1.802,15 K
Melting Point
1.095,15 K
critical pressure
critical temperature
triple point
appearance
color
Silver
appearance
refractive index
thermodynamic material property
Thermal Conductivity
13,9 W/(m K)
thermal expansion
0,000035 1/K
molar heat capacity
27,66 J/(mol K)
Specific Heat Capacity
0,182 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
1,1 MS/m
electrical resistivity
0,0000009 m Ω
superconductivity
1,8 K
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0,000000276 m³/Kg
magnetic susceptibility (Molar)
0,000000041942 m³/mol
magnetic susceptibility (Volume)
0,0014473
magnetic ordering
Germahiya Curie
Néel temperature
90,5 K
pêkhate
Crystal StructureBody Centered Cubic (BCC)
lattice constant
4,61 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
bulk modulus
8,3 GPa
shear modulus
7,9 GPa
Young's modulus
18 GPa
Poisson's ratio
0,15
Leza dengê
classification
CategoryLanthanides, Lanthanides
CAS Group
IUPAC Group
Glawe Number17
Mendeleev Number25
Pettifor Number18
Geochemical Classrare earth & related
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
184 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
4.570
Neutron Mass Absorption
0,6
quantum number8S7/2
space group229 (Im_3m)

Isotopes of Europium

Stable Isotopes1
Unstable Isotopes40
Natural Isotopes2
Isotopic Composition15352.19%15352.19%15147.81%15147.81%

130Eu

Hejmara baristeyî130
neutron number67
Giraniya atomê
129,964022 ± 0,000578 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1 ± 0,4 ms
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê2004
parity+

decay modeintensity
p (proton emission)100%
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

131Eu

Hejmara baristeyî131
neutron number68
Giraniya atomê
130,957634 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
17,8 ± 1,9 ms
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1998
parity+

decay modeintensity
p (proton emission)89%
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

132Eu

Hejmara baristeyî132
neutron number69
Giraniya atomê
131,954696 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)
p (proton emission)0%

133Eu

Hejmara baristeyî133
neutron number70
Giraniya atomê
132,94929 ± 0,00032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

134Eu

Hejmara baristeyî134
neutron number71
Giraniya atomê
133,946537 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
500 ± 200 ms
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê1989
parity

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)

135Eu

Hejmara baristeyî135
neutron number72
Giraniya atomê
134,94187 ± 0,00021 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,5 ± 0,2 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1989
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)

136Eu

Hejmara baristeyî136
neutron number73
Giraniya atomê
135,93962 ± 0,00021 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,3 ± 0,3 s
spin6
nuclear quadrupole moment
dema îcadkirinê yan keşfê1987
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.09%

137Eu

Hejmara baristeyî137
neutron number74
Giraniya atomê
136,935430719 ± 0,0000047 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
8,4 ± 0,5 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1982
parity+

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

138Eu

Hejmara baristeyî138
neutron number75
Giraniya atomê
137,933709 ± 0,00003 Da
g-factor
0,88333333333333 ± 0,11666666666667
natural abundance
radioactivity☢️ radioactive element
half-life
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1982
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)

139Eu

Hejmara baristeyî139
neutron number76
Giraniya atomê
138,929792307 ± 0,000014117 Da
g-factor
1,1090909090909 ± 0,14545454545455
natural abundance
radioactivity☢️ radioactive element
half-life
17,9 ± 0,6 s
spin11/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1975
parity

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

140Eu

Hejmara baristeyî140
neutron number77
Giraniya atomê
139,928087633 ± 0,000055328 Da
g-factor
1,362 ± 0,013
natural abundance
radioactivity☢️ radioactive element
half-life
1,51 ± 0,02 s
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1982
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
e+ (positron emission)95.1%
ϵ (electron capture)4.9%

141Eu

Hejmara baristeyî141
neutron number78
Giraniya atomê
140,924931734 ± 0,000013568 Da
g-factor
1,3944 ± 0,0032
natural abundance
radioactivity☢️ radioactive element
half-life
40,7 ± 0,7 s
spin5/2
nuclear quadrupole moment
0,85 ± 0,04
dema îcadkirinê yan keşfê1977
parity+

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

142Eu

Hejmara baristeyî142
neutron number79
Giraniya atomê
141,923446719 ± 0,000032268 Da
g-factor
1,532 ± 0,019
natural abundance
radioactivity☢️ radioactive element
half-life
2,36 ± 0,1 s
spin1
nuclear quadrupole moment
0,12 ± 0,05
dema îcadkirinê yan keşfê1966
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
e+ (positron emission)89.9%
ϵ (electron capture)10.1%

143Eu

Hejmara baristeyî143
neutron number80
Giraniya atomê
142,920298678 ± 0,000011793 Da
g-factor
1,4656 ± 0,0032
natural abundance
radioactivity☢️ radioactive element
half-life
2,59 ± 0,02 m
spin5/2
nuclear quadrupole moment
0,51 ± 0,03
dema îcadkirinê yan keşfê1965
parity+

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

144Eu

Hejmara baristeyî144
neutron number81
Giraniya atomê
143,918819481 ± 0,00001158 Da
g-factor
1,888 ± 0,013
natural abundance
radioactivity☢️ radioactive element
half-life
10,2 ± 0,1 s
spin1
nuclear quadrupole moment
0,1 ± 0,03
dema îcadkirinê yan keşfê1965
parity+

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

145Eu

Hejmara baristeyî145
neutron number82
Giraniya atomê
144,916272659 ± 0,000003285 Da
g-factor
1,5932 ± 0,0028
natural abundance
radioactivity☢️ radioactive element
half-life
5,93 ± 0,04 d
spin5/2
nuclear quadrupole moment
0,29 ± 0,02
dema îcadkirinê yan keşfê1951
parity+

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

146Eu

Hejmara baristeyî146
neutron number83
Giraniya atomê
145,917210852 ± 0,000006451 Da
g-factor
0,3555 ± 0,00275
natural abundance
radioactivity☢️ radioactive element
half-life
4,61 ± 0,03 d
spin4
nuclear quadrupole moment
-0,18 ± 0,06
dema îcadkirinê yan keşfê1957
parity-

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

147Eu

Hejmara baristeyî147
neutron number84
Giraniya atomê
146,91675244 ± 0,000002758 Da
g-factor
1,486 ± 0,0032
natural abundance
radioactivity☢️ radioactive element
half-life
24,1 ± 0,6 d
spin5/2
nuclear quadrupole moment
0,55 ± 0,03
dema îcadkirinê yan keşfê1951
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)0.0022%

148Eu

Hejmara baristeyî148
neutron number85
Giraniya atomê
147,918091288 ± 0,000010693 Da
g-factor
0,4668 ± 0,002
natural abundance
radioactivity☢️ radioactive element
half-life
54,5 ± 0,5 d
spin5
nuclear quadrupole moment
0,35 ± 0,06
dema îcadkirinê yan keşfê1951
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)9.4%

149Eu

Hejmara baristeyî149
neutron number86
Giraniya atomê
148,917936875 ± 0,00000419 Da
g-factor
1,4224 ± 0,0024
natural abundance
radioactivity☢️ radioactive element
half-life
93,1 ± 0,4 d
spin5/2
nuclear quadrupole moment
0,75 ± 0,02
dema îcadkirinê yan keşfê1959
parity+

decay modeintensity
ϵ (electron capture)100%

150Eu

Hejmara baristeyî150
neutron number87
Giraniya atomê
149,919707092 ± 0,000006688 Da
g-factor
0,5404 ± 0,0022
natural abundance
radioactivity☢️ radioactive element
half-life
36,9 ± 0,9 y
spin5
nuclear quadrupole moment
1,13 ± 0,05
dema îcadkirinê yan keşfê1950
parity-

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

151Eu

Hejmara baristeyî151
neutron number88
Giraniya atomê
150,919856606 ± 0,000001251 Da
g-factor
1,3854 ± 0,001
natural abundance
47,81 ± 0,06
radioactivity☢️ radioactive element
half-life
4,6 ± 1,2 Ey
spin5/2
nuclear quadrupole moment
0,903 ± 0,01
dema îcadkirinê yan keşfê1933
parity+

decay modeintensity
α (α emission)100%

152Eu

Hejmara baristeyî152
neutron number89
Giraniya atomê
151,92175098 ± 0,000001252 Da
g-factor
-0,64513333333333 ± 0,00056666666666667
natural abundance
radioactivity☢️ radioactive element
half-life
13,517 ± 0,006 y
spin3
nuclear quadrupole moment
2,72 ± 0,03
dema îcadkirinê yan keşfê1938
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)72.08%
β (β decay)27.92%

153Eu

Hejmara baristeyî153
neutron number90
Giraniya atomê
152,921236789 ± 0,000001257 Da
g-factor
0,61176 ± 0,00044
natural abundance
52,19 ± 0,06
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin5/2
nuclear quadrupole moment
2,41 ± 0,02
dema îcadkirinê yan keşfê1933
parity+

154Eu

Hejmara baristeyî154
neutron number91
Giraniya atomê
153,922985699 ± 0,000001275 Da
g-factor
-0,66666666666667 ± 0,002
natural abundance
radioactivity☢️ radioactive element
half-life
8,592 ± 0,003 y
spin3
nuclear quadrupole moment
2,85 ± 0,1
dema îcadkirinê yan keşfê1947
parity-

decay modeintensity
β (β decay)99.982%
ϵ (electron capture)0.018%

155Eu

Hejmara baristeyî155
neutron number92
Giraniya atomê
154,922899847 ± 0,000001343 Da
g-factor
0,6064 ± 0,0008
natural abundance
radioactivity☢️ radioactive element
half-life
4,742 ± 0,008 y
spin5/2
nuclear quadrupole moment
2,5 ± 0,3
dema îcadkirinê yan keşfê1947
parity+

decay modeintensity
β (β decay)100%

156Eu

Hejmara baristeyî156
neutron number93
Giraniya atomê
155,924762976 ± 0,000003791 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
15,19 ± 0,08 d
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1947
parity+

decay modeintensity
β (β decay)100%

157Eu

Hejmara baristeyî157
neutron number94
Giraniya atomê
156,925432556 ± 0,000004545 Da
g-factor
0,6 ± 0,008
natural abundance
radioactivity☢️ radioactive element
half-life
15,18 ± 0,03 h
spin5/2
nuclear quadrupole moment
2,6 ± 0,3
dema îcadkirinê yan keşfê1951
parity+

decay modeintensity
β (β decay)100%

158Eu

Hejmara baristeyî158
neutron number95
Giraniya atomê
157,927782192 ± 0,000002181 Da
g-factor
1,44 ± 0,02
natural abundance
radioactivity☢️ radioactive element
half-life
45,9 ± 0,2 m
spin1
nuclear quadrupole moment
0,66 ± 0,14
dema îcadkirinê yan keşfê1951
parity-

decay modeintensity
β (β decay)100%

159Eu

Hejmara baristeyî159
neutron number96
Giraniya atomê
158,929099512 ± 0,000004637 Da
g-factor
0,552 ± 0,008
natural abundance
radioactivity☢️ radioactive element
half-life
18,1 ± 0,1 m
spin5/2
nuclear quadrupole moment
2,7 ± 0,3
dema îcadkirinê yan keşfê1961
parity+

decay modeintensity
β (β decay)100%

160Eu

Hejmara baristeyî160
neutron number97
Giraniya atomê
159,931836982 ± 0,00000097 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
42,6 ± 0,5 s
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê1973
parity-

decay modeintensity
β (β decay)100%

161Eu

Hejmara baristeyî161
neutron number98
Giraniya atomê
160,933663991 ± 0,000011164 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
26,2 ± 2,3 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1986
parity+

decay modeintensity
β (β decay)100%

162Eu

Hejmara baristeyî162
neutron number99
Giraniya atomê
161,936958329 ± 0,00000141 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1987
parity+

decay modeintensity
β (β decay)100%

163Eu

Hejmara baristeyî163
neutron number100
Giraniya atomê
162,93926551 ± 0,00000097 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
7,7 ± 0,4 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2007
parity+

decay modeintensity
β (β decay)100%

164Eu

Hejmara baristeyî164
neutron number101
Giraniya atomê
163,942852943 ± 0,000002219 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,16 ± 0,19 s
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê2007
parity-

decay modeintensity
β (β decay)100%

165Eu

Hejmara baristeyî165
neutron number102
Giraniya atomê
164,94554007 ± 0,000005596 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,53 ± 0,25 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2007
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

166Eu

Hejmara baristeyî166
neutron number103
Giraniya atomê
165,949813 ± 0,000107 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
1,24 ± 0,12 s
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2007
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

167Eu

Hejmara baristeyî167
neutron number104
Giraniya atomê
166,953011 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,33 ± 0,51 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2012
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

168Eu

Hejmara baristeyî168
neutron number105
Giraniya atomê
167,957863 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
200 ± 100 ms
spin6
nuclear quadrupole moment
dema îcadkirinê yan keşfê2012
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

169Eu

Hejmara baristeyî169
neutron number106
Giraniya atomê
168,961717 ± 0,000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2018
parity+

decay modeintensity
β (β decay)

170Eu

Hejmara baristeyî170
neutron number107
Giraniya atomê
169,96687 ± 0,000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
Eu-Block

dîrok

kaşîf an îcadkerEugène Demarçay
location of discoveryFrance
dema îcadkirinê yan keşfê1901
BêjenasîNamed for the continent of Europe.
pronunciationyoo-RO-pi-em (îngilîzî)

source

Abundance
Abundance in Earth's crust
natural abundance (Okyanûs)
0,00000013 mg/L
natural abundance (human body)
natural abundance (meteoroid)
0,0000059 %
natural abundance (Roj)
0,00000005 %
Abundance in Universe
0,00000005 %

Nuclear Screening Constants

1s1.2391
2p4.282
2s16.5292
3d13.7472
3p19.716
3s20.1318
4d34.0592
4f38.68
4p31.1252
4s30.132
5p46.445
5s44.41
6s54.8784