Europio (Eu)

chemical element with atomic number of 63

Atomic Number	63
Atomic Weight	151.964
Numero masico	153

Group
Period	6
Block	f

Protón	63 p⁺
Neutrón	90 n⁰
Electrón	63 e^-

Animated Modelo atomico de Bohr of Eu (Europio)

Physical Property

Radio Atomico	185 pm 280 pm
molar volume	28.9 cm³/mol
Radio covalent	168 pm 134 pm 198 pm
Metallic Radius
Radio ionico	117 pm 120 pm 125 pm 130 pm 135 pm 94.7 pm 101 pm 106.6 pm 112 pm
Crystal Radius	131 pm 134 pm 139 pm 144 pm 149 pm 108.7 pm 115 pm 120.6 pm 126 pm
Radio de van der Waals	235 pm 294 pm 349.3 pm
density	5.24 g/cm³ 5130 kg/m³

Chemical Property

enerchía

proton affinity
Afinidat electronica	0.864 eV/particle
ionization energy	5.670385 eV/particle 11.241 eV/particle 24.9 eV/particle 42.7 eV/particle 63 eV/particle 88 eV/particle 105 eV/particle 120 eV/particle 144 eV/particle 161 eV/particle 183 eV/particle 213 eV/particle 243 eV/particle 263 eV/particle 281 eV/particle 311 eV/particle 344.4 eV/particle 518 eV/particle 553 eV/particle 590 eV/particle 630 eV/particle 667 eV/particle 709 eV/particle 755 eV/particle 795 eV/particle 838 eV/particle 879 eV/particle 1037 eV/particle 1078 eV/particle 1124 eV/particle 1167 eV/particle 1249 eV/particle 1296 eV/particle 1406 eV/particle 1456.06 eV/particle 2495 eV/particle 2591 eV/particle 2697 eV/particle 2807 eV/particle 2914 eV/particle 3022 eV/particle 3168 eV/particle 3279 eV/particle 3398 eV/particle 3510 eV/particle 3823 eV/particle 3921 eV/particle 4031 eV/particle 4131 eV/particle 4400 eV/particle 4510 eV/particle 4729 eV/particle 4838 eV/particle 10880 eV/particle 11153 eV/particle 11457 eV/particle 11739 eV/particle 12718 eV/particle 13050 eV/particle 13462 eV/particle 13738.58 eV/particle 55865.9 eV/particle 57120.6 eV/particle

Entalpía de vaporización	176 kJ/mol
entalpía de fusión
standard enthalpy of formation	177.4 kJ/mol
Electrón

electron shell	2, 8, 18, 25, 8, 2

valence electron	2 ⓘ

electron configuration	[Xe] 4f⁷ 6s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f⁷ 6s²

Numero d'oxidación	0, 2, 3
Electronegatividat	0.189935
Electrophilicity Index	1.1104548254099753 eV/particle
fundamental state of matter

phase of matter	Solid
gaseous state of matter
Boiling Point	1802.15 K
Melting Point	1095.15 K
critical pressure
critical temperature
Punto triple
appearance
Color	Silver #ff1493 #61ffc7 #61ffc7
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
type	Conductor
electrical conductivity	1.1 MS/m
electrical resistivity	0.0000009 Ω*m
superconductivity	1.8 K
magnetism
type	paramagnetic
magnetic susceptibility (Mass)	0.000000276 m³/Kg
magnetic susceptibility (Molar)	0.000000041942 m³/mol
magnetic susceptibility (Volume)	0.0014473
magnetic ordering
Curie temperature
Néel temperature	90.5 K
structure
Crystal Structure	Body Centered Cubic (BCC)
lattice constant	4.61 Å
Lattice Angles	π/2, π/2, π/2
mechanical property
hardness	167 MPa
bulk modulus	8.3 GPa
shear modulus	7.9 GPa
Young's modulus	18 GPa
Poisson's ratio	0.15
speed of sound
classification
Category	Lanthanides, Lanthanides
CAS Group
IUPAC Group
Glawe Number	17
Mendeleev Number	25
Pettifor Number	18
Geochemical Class	rare earth & related
Goldschmidt classification	litophile

other

Gas Basicity
polarizability	184 ± 20 a₀
C6 Dispersion Coefficient	2940 a₀
allotrope
Neutron cross section	4570
Neutron Mass Absorption	0.6
quantum number	8S7/2
space group	229 (Im_3m)

Isotopes of Europium

Stable Isotopes	1
Unstable Isotopes	40
Natural Isotopes	2

¹³⁰Eu

Numero masico	130
neutron number	67
Relative Atomic Mass	129.964022 ± 0.000578 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	1 ± 0.4 ms
spin	1
nuclear quadrupole moment
time of discovery or invention	2004
parity	+

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

¹³¹Eu

Numero masico	131
neutron number	68
Relative Atomic Mass	130.957634 ± 0.000429 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	17.8 ± 1.9 ms
spin	3/2
nuclear quadrupole moment
time of discovery or invention	1998
parity	+

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

¹³²Eu

Numero masico	132
neutron number	69
Relative Atomic Mass	131.954696 ± 0.000429 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración
spin	1
nuclear quadrupole moment
time of discovery or invention
parity	+

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

¹³³Eu

Numero masico	133
neutron number	70
Relative Atomic Mass	132.94929 ± 0.00032 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración
spin	5/2
nuclear quadrupole moment
time of discovery or invention
parity	+

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

¹³⁴Eu

Numero masico	134
neutron number	71
Relative Atomic Mass	133.946537 ± 0.000322 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	500 ± 200 ms
spin
nuclear quadrupole moment
time of discovery or invention	1989
parity

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

¹³⁵Eu

Numero masico	135
neutron number	72
Relative Atomic Mass	134.94187 ± 0.00021 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	1.5 ± 0.2 s
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1989
parity	+

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

¹³⁶Eu

Numero masico	136
neutron number	73
Relative Atomic Mass	135.93962 ± 0.00021 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	3.3 ± 0.3 s
spin	6
nuclear quadrupole moment
time of discovery or invention	1987
parity	+

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

¹³⁷Eu

Numero masico	137
neutron number	74
Relative Atomic Mass	136.935430719 ± 0.0000047 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	8.4 ± 0.5 s
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1982
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹³⁸Eu

Numero masico	138
neutron number	75
Relative Atomic Mass	137.933709 ± 0.00003 Da
g-factor	0.88333333333333 ± 0.11666666666667
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración
spin	2
nuclear quadrupole moment
time of discovery or invention	1982
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

¹³⁹Eu

Numero masico	139
neutron number	76
Relative Atomic Mass	138.929792307 ± 0.000014117 Da
g-factor	1.1090909090909 ± 0.14545454545455
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	17.9 ± 0.6 s
spin	11/2
nuclear quadrupole moment
time of discovery or invention	1975
parity

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁴⁰Eu

Numero masico	140
neutron number	77
Relative Atomic Mass	139.928087633 ± 0.000055328 Da
g-factor	1.362 ± 0.013
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	1.51 ± 0.02 s
spin	1
nuclear quadrupole moment
time of discovery or invention	1982
parity	+

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

¹⁴¹Eu

Numero masico	141
neutron number	78
Relative Atomic Mass	140.924931734 ± 0.000013568 Da
g-factor	1.3944 ± 0.0032
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	40.7 ± 0.7 s
spin	5/2
nuclear quadrupole moment	0.85 ± 0.04
time of discovery or invention	1977
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁴²Eu

Numero masico	142
neutron number	79
Relative Atomic Mass	141.923446719 ± 0.000032268 Da
g-factor	1.532 ± 0.019
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	2.36 ± 0.1 s
spin	1
nuclear quadrupole moment	0.12 ± 0.05
time of discovery or invention	1966
parity	+

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

¹⁴³Eu

Numero masico	143
neutron number	80
Relative Atomic Mass	142.920298678 ± 0.000011793 Da
g-factor	1.4656 ± 0.0032
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	2.59 ± 0.02 m
spin	5/2
nuclear quadrupole moment	0.51 ± 0.03
time of discovery or invention	1965
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁴⁴Eu

Numero masico	144
neutron number	81
Relative Atomic Mass	143.918819481 ± 0.00001158 Da
g-factor	1.888 ± 0.013
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	10.2 ± 0.1 s
spin	1
nuclear quadrupole moment	0.1 ± 0.03
time of discovery or invention	1965
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁴⁵Eu

Numero masico	145
neutron number	82
Relative Atomic Mass	144.916272659 ± 0.000003285 Da
g-factor	1.5932 ± 0.0028
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	5.93 ± 0.04 d
spin	5/2
nuclear quadrupole moment	0.29 ± 0.02
time of discovery or invention	1951
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁴⁶Eu

Numero masico	146
neutron number	83
Relative Atomic Mass	145.917210852 ± 0.000006451 Da
g-factor	0.3555 ± 0.00275
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	4.61 ± 0.03 d
spin	4
nuclear quadrupole moment	-0.18 ± 0.06
time of discovery or invention	1957
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁴⁷Eu

Numero masico	147
neutron number	84
Relative Atomic Mass	146.91675244 ± 0.000002758 Da
g-factor	1.486 ± 0.0032
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	24.1 ± 0.6 d
spin	5/2
nuclear quadrupole moment	0.55 ± 0.03
time of discovery or invention	1951
parity	+

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

¹⁴⁸Eu

Numero masico	148
neutron number	85
Relative Atomic Mass	147.918091288 ± 0.000010693 Da
g-factor	0.4668 ± 0.002
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	54.5 ± 0.5 d
spin	5
nuclear quadrupole moment	0.35 ± 0.06
time of discovery or invention	1951
parity	-

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

¹⁴⁹Eu

Numero masico	149
neutron number	86
Relative Atomic Mass	148.917936875 ± 0.00000419 Da
g-factor	1.4224 ± 0.0024
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	93.1 ± 0.4 d
spin	5/2
nuclear quadrupole moment	0.75 ± 0.02
time of discovery or invention	1959
parity	+

decay mode	intensity
ϵ (electron capture)	100%

¹⁵⁰Eu

Numero masico	150
neutron number	87
Relative Atomic Mass	149.919707092 ± 0.000006688 Da
g-factor	0.5404 ± 0.0022
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	36.9 ± 0.9 y
spin	5
nuclear quadrupole moment	1.13 ± 0.05
time of discovery or invention	1950
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹⁵¹Eu

Numero masico	151
neutron number	88
Relative Atomic Mass	150.919856606 ± 0.000001251 Da
g-factor	1.3854 ± 0.001
natural abundance	47.81 ± 0.06
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	4.6 ± 1.2 Ey
spin	5/2
nuclear quadrupole moment	0.903 ± 0.01
time of discovery or invention	1933
parity	+

decay mode	intensity
α (α emission)	100%

¹⁵²Eu

Numero masico	152
neutron number	89
Relative Atomic Mass	151.92175098 ± 0.000001252 Da
g-factor	-0.64513333333333 ± 0.00056666666666667
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	13.517 ± 0.006 y
spin	3
nuclear quadrupole moment	2.72 ± 0.03
time of discovery or invention	1938
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	72.08%
β⁻ (β⁻ decay)	27.92%

¹⁵³Eu

Numero masico	153
neutron number	90
Relative Atomic Mass	152.921236789 ± 0.000001257 Da
g-factor	0.61176 ± 0.00044
natural abundance	52.19 ± 0.06
Radioactividat	stable isotope
Periodo de semidesintegración	Not Radioactive ☢️
spin	5/2
nuclear quadrupole moment	2.41 ± 0.02
time of discovery or invention	1933
parity	+

¹⁵⁴Eu

Numero masico	154
neutron number	91
Relative Atomic Mass	153.922985699 ± 0.000001275 Da
g-factor	-0.66666666666667 ± 0.002
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	8.592 ± 0.003 y
spin	3
nuclear quadrupole moment	2.85 ± 0.1
time of discovery or invention	1947
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	99.982%
ϵ (electron capture)	0.018%

¹⁵⁵Eu

Numero masico	155
neutron number	92
Relative Atomic Mass	154.922899847 ± 0.000001343 Da
g-factor	0.6064 ± 0.0008
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	4.742 ± 0.008 y
spin	5/2
nuclear quadrupole moment	2.5 ± 0.3
time of discovery or invention	1947
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁵⁶Eu

Numero masico	156
neutron number	93
Relative Atomic Mass	155.924762976 ± 0.000003791 Da
g-factor	0
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	15.19 ± 0.08 d
spin	0
nuclear quadrupole moment	0
time of discovery or invention	1947
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁵⁷Eu

Numero masico	157
neutron number	94
Relative Atomic Mass	156.925432556 ± 0.000004545 Da
g-factor	0.6 ± 0.008
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	15.18 ± 0.03 h
spin	5/2
nuclear quadrupole moment	2.6 ± 0.3
time of discovery or invention	1951
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁵⁸Eu

Numero masico	158
neutron number	95
Relative Atomic Mass	157.927782192 ± 0.000002181 Da
g-factor	1.44 ± 0.02
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	45.9 ± 0.2 m
spin	1
nuclear quadrupole moment	0.66 ± 0.14
time of discovery or invention	1951
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁵⁹Eu

Numero masico	159
neutron number	96
Relative Atomic Mass	158.929099512 ± 0.000004637 Da
g-factor	0.552 ± 0.008
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	18.1 ± 0.1 m
spin	5/2
nuclear quadrupole moment	2.7 ± 0.3
time of discovery or invention	1961
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁶⁰Eu

Numero masico	160
neutron number	97
Relative Atomic Mass	159.931836982 ± 0.00000097 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	42.6 ± 0.5 s
spin	5
nuclear quadrupole moment
time of discovery or invention	1973
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁶¹Eu

Numero masico	161
neutron number	98
Relative Atomic Mass	160.933663991 ± 0.000011164 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	26.2 ± 2.3 s
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1986
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁶²Eu

Numero masico	162
neutron number	99
Relative Atomic Mass	161.936958329 ± 0.00000141 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración
spin	1
nuclear quadrupole moment
time of discovery or invention	1987
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁶³Eu

Numero masico	163
neutron number	100
Relative Atomic Mass	162.93926551 ± 0.00000097 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	7.7 ± 0.4 s
spin	5/2
nuclear quadrupole moment
time of discovery or invention	2007
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁶⁴Eu

Numero masico	164
neutron number	101
Relative Atomic Mass	163.942852943 ± 0.000002219 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	4.16 ± 0.19 s
spin	3
nuclear quadrupole moment
time of discovery or invention	2007
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁶⁵Eu

Numero masico	165
neutron number	102
Relative Atomic Mass	164.94554007 ± 0.000005596 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	2.53 ± 0.25 s
spin	5/2
nuclear quadrupole moment
time of discovery or invention	2007
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

¹⁶⁶Eu

Numero masico	166
neutron number	103
Relative Atomic Mass	165.949813 ± 0.000107 Da
g-factor	0
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	1.24 ± 0.12 s
spin	0
nuclear quadrupole moment	0
time of discovery or invention	2007
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

¹⁶⁷Eu

Numero masico	167
neutron number	104
Relative Atomic Mass	166.953011 ± 0.000429 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	1.33 ± 0.51 s
spin	5/2
nuclear quadrupole moment
time of discovery or invention	2012
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

¹⁶⁸Eu

Numero masico	168
neutron number	105
Relative Atomic Mass	167.957863 ± 0.000429 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración	200 ± 100 ms
spin	6
nuclear quadrupole moment
time of discovery or invention	2012
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

¹⁶⁹Eu

Numero masico	169
neutron number	106
Relative Atomic Mass	168.961717 ± 0.000537 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración
spin	5/2
nuclear quadrupole moment
time of discovery or invention	2018
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

¹⁷⁰Eu

Numero masico	170
neutron number	107
Relative Atomic Mass	169.96687 ± 0.000537 Da
g-factor
natural abundance
Radioactividat	☢️ radioactive element
Periodo de semidesintegración
spin
nuclear quadrupole moment
time of discovery or invention
parity

decay mode	intensity
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)

historia

discoverer or inventor	Eugène Demarçay
location of discovery	France
time of discovery or invention	1901
Etimolochía	Named for the continent of Europe.
pronunciation	yoo-RO-pi-em (English)

source

Abundance
Abundance in Earth's crust	2 mg/kg
natural abundance (ocián)	0.00000013 mg/L
natural abundance (human body)
natural abundance (meteoroid)	0.0000059 %
natural abundance (Sol)	0.00000005 %
Abundance in Universe	0.00000005 %

Nuclear Screening Constants

1	s	1.2391
2	p	4.282
2	s	16.5292
3	d	13.7472
3	p	19.716
3	s	20.1318
4	d	34.0592
4	f	38.68
4	p	31.1252
4	s	30.132
5	p	46.445
5	s	44.41
6	s	54.8784

Europio on ChemicalAid

europium

Australian Educational Vocabulary ID	scot/3518
CAB ID	154848
CAS Registry Number	7440-53-1
ChEBI ID	32999
ChemSpider ID	22417
DSSTOX compound identifier	DTXCID0047660
DSSTox substance ID	DTXSID3064695
Den Store Danske ID	europium
ECHA Substance Infocard ID	100.028.328
Elhuyar ZTH ID	023875
Encyclopedia of China ID (Second Edition)	243832
Encyclopædia Britannica Online ID	science/europium
Encyclopædia Universalis ID	europium
Freebase ID	/m/028bf0d
French Vikidia ID	Europium
GND ID	4153210-7
Gran Enciclopèdia Catalana ID	0107121
Great Russian Encyclopedia Online ID	1974896
InChI	InChI=1S/Eu
InChIKey	OGPBJKLSAFTDLK-UHFFFAOYSA-N
Interlingual Index ID	i113931
KBpedia ID	Europium
Library of Congress authority ID	sh85045863
MeSH descriptor ID	D005063
NALT ID	38725
Namuwiki ID	유로퓸
National Library of Israel J9U ID	987007560305105171
OmegaWiki Defined Meaning	158490
OpenAlex ID	C502696234
PubChem CID	23981
RxNorm ID	1311484
Store norske leksikon ID	europium
Treccani ID	europio
UNII	444W947O8O
USGS Thesaurus ID	1450
WordNet 3.1 Synset ID	14661354-n
ZVG number	7630

Europio (Eu)

Physical Property

Chemical Property

other

Isotopes of Europium

130Eu

131Eu

132Eu

133Eu

134Eu

135Eu

136Eu

137Eu

138Eu

139Eu

140Eu

141Eu

142Eu

143Eu

144Eu

145Eu

146Eu

147Eu

148Eu

149Eu

150Eu

151Eu

152Eu

153Eu

154Eu

155Eu

156Eu

157Eu

158Eu

159Eu

160Eu

161Eu

162Eu

163Eu

164Eu

165Eu

166Eu

167Eu

168Eu

169Eu

170Eu

historia

source

Nuclear Screening Constants

¹³⁰Eu

¹³¹Eu

¹³²Eu

¹³³Eu

¹³⁴Eu

¹³⁵Eu

¹³⁶Eu

¹³⁷Eu

¹³⁸Eu

¹³⁹Eu

¹⁴⁰Eu

¹⁴¹Eu

¹⁴²Eu

¹⁴³Eu

¹⁴⁴Eu

¹⁴⁵Eu

¹⁴⁶Eu

¹⁴⁷Eu

¹⁴⁸Eu

¹⁴⁹Eu

¹⁵⁰Eu

¹⁵¹Eu

¹⁵²Eu

¹⁵³Eu

¹⁵⁴Eu

¹⁵⁵Eu

¹⁵⁶Eu

¹⁵⁷Eu

¹⁵⁸Eu

¹⁵⁹Eu

¹⁶⁰Eu

¹⁶¹Eu

¹⁶²Eu

¹⁶³Eu

¹⁶⁴Eu

¹⁶⁵Eu

¹⁶⁶Eu

¹⁶⁷Eu

¹⁶⁸Eu

¹⁶⁹Eu

¹⁷⁰Eu