Europium (Eu)

grundstof med atomnummer 63

Atomnummer	63
Atommasse	151.964
mass number	153

Gruppe
Periode	6
Blok	f

proton	63 p⁺
neutron	90 n⁰
elektron	63 e^-

Animated Bohrs atommodel of Eu (Europium)

Fysisk Egenskab

Atomradius	185 pm 280 pm
molar volume	28,9 cm³/mol
Kovalent Radius	168 pm 134 pm 198 pm
Metallic Radius
Ionisk radius	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
Van der Waals-radius	235 pm 294 pm 349,3 pm
massefylde	5,24 g/cm³ 5.130 kg/m³

Kemisk Egenskab

energi

proton affinity
electron affinity	0,864 eV/particle
ioniseringsenergi	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 1.037 eV/particle 1.078 eV/particle 1.124 eV/particle 1.167 eV/particle 1.249 eV/particle 1.296 eV/particle 1.406 eV/particle 1.456,06 eV/particle 2.495 eV/particle 2.591 eV/particle 2.697 eV/particle 2.807 eV/particle 2.914 eV/particle 3.022 eV/particle 3.168 eV/particle 3.279 eV/particle 3.398 eV/particle 3.510 eV/particle 3.823 eV/particle 3.921 eV/particle 4.031 eV/particle 4.131 eV/particle 4.400 eV/particle 4.510 eV/particle 4.729 eV/particle 4.838 eV/particle 10.880 eV/particle 11.153 eV/particle 11.457 eV/particle 11.739 eV/particle 12.718 eV/particle 13.050 eV/particle 13.462 eV/particle 13.738,58 eV/particle 55.865,9 eV/particle 57.120,6 eV/particle

Fordampningsvarme	176 kJ/mol
smeltevarme
standard enthalpy of formation	177,4 kJ/mol
elektron

Elektronskal	2, 8, 18, 25, 8, 2

Valenselektron	2 ⓘ

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

Oxidationstrin	0, 2, 3
Elektronegativitet	0.189935
Electrophilicity Index	1,1104548254099753 eV/particle
fundamental state of matter

stoffase	Fast stof
gaseous state of matter
Kogepunkt	1.802,15 K
Smeltepunkt	1.095,15 K
critical pressure
critical temperature
trippelpunkt
appearance
farve	Silver #ff1493 #61ffc7 #61ffc7
appearance
Brydningsindeks
materialeegenskab
Varmeledningsevne	13,9 W/(m K)
Termisk ekspansion	0,000035 1/K
molar heat capacity	27,66 J/(mol K)
Varmefylde	0,182 J/(g⋅K)
Adiabateksponenten
electrical properties
type	Conductor
specifik ledningsevne	1,1 MS/m
Elektrisk resistivitet	0,0000009 Ω*m
superledning	1,8 K
Magnetisme
type	paramagnetic
magnetic susceptibility (Mass)	0,000000276 m³/Kg
magnetic susceptibility (Molar)	0,000000041942 m³/mol
magnetic susceptibility (Volume)	0,0014473
magnetic ordering
Curietemperaturen
Néel temperature	90,5 K
struktur
Krystalstruktur	Rumcentreret Kubisk (BCC)
lattice constant	4,61 Å
Lattice Angles	π/2, π/2, π/2
mechanical property
hårdhed	167 MPa
Kompressibilitetsmodul	8,3 GPa
Forskydningsmodul	7,9 GPa
E-modul	18 GPa
Poissons forhold	0,15
speed of sound
klassificering
Kategori	Lantanider, Lanthanides
CAS Group
IUPAC Group
Glawe Number	17
Mendeleev Number	25
Pettifor Number	18
Geochemical Class	rare earth & related
Goldschmidt classification	litophile

øvrige

Gas Basicity
polarizability	184 ± 20 a₀
C6 Dispersion Coefficient	2.940 a₀
allotrope
Neutron cross section	4.570
Neutron Mass Absorption	0,6
quantum number	8S7/2
rumgruppe	229 (Im_3m)

Isotopes of Europium

Stable Isotopes	1
Unstable Isotopes	40
Natural Isotopes	2

¹³⁰Eu

mass number	130
neutron number	67
Relative Atomic Mass	129,964022 ± 0,000578 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	1 ± 0,4 ms
spin	1
nuclear quadrupole moment
opdagelsesdato	2004
Paritet	+

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

¹³¹Eu

mass number	131
neutron number	68
Relative Atomic Mass	130,957634 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	17,8 ± 1,9 ms
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1998
Paritet	+

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

¹³²Eu

mass number	132
neutron number	69
Relative Atomic Mass	131,954696 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	1
nuclear quadrupole moment
opdagelsesdato
Paritet	+

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

¹³³Eu

mass number	133
neutron number	70
Relative Atomic Mass	132,94929 ± 0,00032 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	5/2
nuclear quadrupole moment
opdagelsesdato
Paritet	+

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

¹³⁴Eu

mass number	134
neutron number	71
Relative Atomic Mass	133,946537 ± 0,000322 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	500 ± 200 ms
spin
nuclear quadrupole moment
opdagelsesdato	1989
Paritet

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

¹³⁵Eu

mass number	135
neutron number	72
Relative Atomic Mass	134,94187 ± 0,00021 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	1,5 ± 0,2 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1989
Paritet	+

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

¹³⁶Eu

mass number	136
neutron number	73
Relative Atomic Mass	135,93962 ± 0,00021 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	3,3 ± 0,3 s
spin	6
nuclear quadrupole moment
opdagelsesdato	1987
Paritet	+

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

¹³⁷Eu

mass number	137
neutron number	74
Relative Atomic Mass	136,935430719 ± 0,0000047 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	8,4 ± 0,5 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1982
Paritet	+

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

¹³⁸Eu

mass number	138
neutron number	75
Relative Atomic Mass	137,933709 ± 0,00003 Da
g-factor	0,88333333333333 ± 0,11666666666667
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	2
nuclear quadrupole moment
opdagelsesdato	1982
Paritet	-

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

¹³⁹Eu

mass number	139
neutron number	76
Relative Atomic Mass	138,929792307 ± 0,000014117 Da
g-factor	1,1090909090909 ± 0,14545454545455
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	17,9 ± 0,6 s
spin	11/2
nuclear quadrupole moment
opdagelsesdato	1975
Paritet

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

¹⁴⁰Eu

mass number	140
neutron number	77
Relative Atomic Mass	139,928087633 ± 0,000055328 Da
g-factor	1,362 ± 0,013
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	1,51 ± 0,02 s
spin	1
nuclear quadrupole moment
opdagelsesdato	1982
Paritet	+

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

¹⁴¹Eu

mass number	141
neutron number	78
Relative Atomic Mass	140,924931734 ± 0,000013568 Da
g-factor	1,3944 ± 0,0032
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	40,7 ± 0,7 s
spin	5/2
nuclear quadrupole moment	0,85 ± 0,04
opdagelsesdato	1977
Paritet	+

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

¹⁴²Eu

mass number	142
neutron number	79
Relative Atomic Mass	141,923446719 ± 0,000032268 Da
g-factor	1,532 ± 0,019
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	2,36 ± 0,1 s
spin	1
nuclear quadrupole moment	0,12 ± 0,05
opdagelsesdato	1966
Paritet	+

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

¹⁴³Eu

mass number	143
neutron number	80
Relative Atomic Mass	142,920298678 ± 0,000011793 Da
g-factor	1,4656 ± 0,0032
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	2,59 ± 0,02 m
spin	5/2
nuclear quadrupole moment	0,51 ± 0,03
opdagelsesdato	1965
Paritet	+

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

¹⁴⁴Eu

mass number	144
neutron number	81
Relative Atomic Mass	143,918819481 ± 0,00001158 Da
g-factor	1,888 ± 0,013
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	10,2 ± 0,1 s
spin	1
nuclear quadrupole moment	0,1 ± 0,03
opdagelsesdato	1965
Paritet	+

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

¹⁴⁵Eu

mass number	145
neutron number	82
Relative Atomic Mass	144,916272659 ± 0,000003285 Da
g-factor	1,5932 ± 0,0028
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	5,93 ± 0,04 d
spin	5/2
nuclear quadrupole moment	0,29 ± 0,02
opdagelsesdato	1951
Paritet	+

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

¹⁴⁶Eu

mass number	146
neutron number	83
Relative Atomic Mass	145,917210852 ± 0,000006451 Da
g-factor	0,3555 ± 0,00275
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	4,61 ± 0,03 d
spin	4
nuclear quadrupole moment	-0,18 ± 0,06
opdagelsesdato	1957
Paritet	-

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

¹⁴⁷Eu

mass number	147
neutron number	84
Relative Atomic Mass	146,91675244 ± 0,000002758 Da
g-factor	1,486 ± 0,0032
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	24,1 ± 0,6 d
spin	5/2
nuclear quadrupole moment	0,55 ± 0,03
opdagelsesdato	1951
Paritet	+

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

¹⁴⁸Eu

mass number	148
neutron number	85
Relative Atomic Mass	147,918091288 ± 0,000010693 Da
g-factor	0,4668 ± 0,002
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	54,5 ± 0,5 d
spin	5
nuclear quadrupole moment	0,35 ± 0,06
opdagelsesdato	1951
Paritet	-

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

¹⁴⁹Eu

mass number	149
neutron number	86
Relative Atomic Mass	148,917936875 ± 0,00000419 Da
g-factor	1,4224 ± 0,0024
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	93,1 ± 0,4 d
spin	5/2
nuclear quadrupole moment	0,75 ± 0,02
opdagelsesdato	1959
Paritet	+

decay mode	Intensitet
ϵ (electron capture)	100%

¹⁵⁰Eu

mass number	150
neutron number	87
Relative Atomic Mass	149,919707092 ± 0,000006688 Da
g-factor	0,5404 ± 0,0022
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	36,9 ± 0,9 y
spin	5
nuclear quadrupole moment	1,13 ± 0,05
opdagelsesdato	1950
Paritet	-

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

¹⁵¹Eu

mass number	151
neutron number	88
Relative Atomic Mass	150,919856606 ± 0,000001251 Da
g-factor	1,3854 ± 0,001
natural abundance	47,81 ± 0,06
radioaktivitet	☢️ radioactive element
halveringstid	4,6 ± 1,2 Ey
spin	5/2
nuclear quadrupole moment	0,903 ± 0,01
opdagelsesdato	1933
Paritet	+

decay mode	Intensitet
α (α emission)	100%

¹⁵²Eu

mass number	152
neutron number	89
Relative Atomic Mass	151,92175098 ± 0,000001252 Da
g-factor	-0,64513333333333 ± 0,00056666666666667
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	13,517 ± 0,006 y
spin	3
nuclear quadrupole moment	2,72 ± 0,03
opdagelsesdato	1938
Paritet	-

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

¹⁵³Eu

mass number	153
neutron number	90
Relative Atomic Mass	152,921236789 ± 0,000001257 Da
g-factor	0,61176 ± 0,00044
natural abundance	52,19 ± 0,06
radioaktivitet	stable isotope
halveringstid	Not Radioactive ☢️
spin	5/2
nuclear quadrupole moment	2,41 ± 0,02
opdagelsesdato	1933
Paritet	+

¹⁵⁴Eu

mass number	154
neutron number	91
Relative Atomic Mass	153,922985699 ± 0,000001275 Da
g-factor	-0,66666666666667 ± 0,002
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	8,592 ± 0,003 y
spin	3
nuclear quadrupole moment	2,85 ± 0,1
opdagelsesdato	1947
Paritet	-

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

¹⁵⁵Eu

mass number	155
neutron number	92
Relative Atomic Mass	154,922899847 ± 0,000001343 Da
g-factor	0,6064 ± 0,0008
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	4,742 ± 0,008 y
spin	5/2
nuclear quadrupole moment	2,5 ± 0,3
opdagelsesdato	1947
Paritet	+

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

¹⁵⁶Eu

mass number	156
neutron number	93
Relative Atomic Mass	155,924762976 ± 0,000003791 Da
g-factor	0
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	15,19 ± 0,08 d
spin	0
nuclear quadrupole moment	0
opdagelsesdato	1947
Paritet	+

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

¹⁵⁷Eu

mass number	157
neutron number	94
Relative Atomic Mass	156,925432556 ± 0,000004545 Da
g-factor	0,6 ± 0,008
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	15,18 ± 0,03 h
spin	5/2
nuclear quadrupole moment	2,6 ± 0,3
opdagelsesdato	1951
Paritet	+

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

¹⁵⁸Eu

mass number	158
neutron number	95
Relative Atomic Mass	157,927782192 ± 0,000002181 Da
g-factor	1,44 ± 0,02
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	45,9 ± 0,2 m
spin	1
nuclear quadrupole moment	0,66 ± 0,14
opdagelsesdato	1951
Paritet	-

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

¹⁵⁹Eu

mass number	159
neutron number	96
Relative Atomic Mass	158,929099512 ± 0,000004637 Da
g-factor	0,552 ± 0,008
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	18,1 ± 0,1 m
spin	5/2
nuclear quadrupole moment	2,7 ± 0,3
opdagelsesdato	1961
Paritet	+

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

¹⁶⁰Eu

mass number	160
neutron number	97
Relative Atomic Mass	159,931836982 ± 0,00000097 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	42,6 ± 0,5 s
spin	5
nuclear quadrupole moment
opdagelsesdato	1973
Paritet	-

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

¹⁶¹Eu

mass number	161
neutron number	98
Relative Atomic Mass	160,933663991 ± 0,000011164 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	26,2 ± 2,3 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1986
Paritet	+

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

¹⁶²Eu

mass number	162
neutron number	99
Relative Atomic Mass	161,936958329 ± 0,00000141 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	1
nuclear quadrupole moment
opdagelsesdato	1987
Paritet	+

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

¹⁶³Eu

mass number	163
neutron number	100
Relative Atomic Mass	162,93926551 ± 0,00000097 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	7,7 ± 0,4 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	2007
Paritet	+

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

¹⁶⁴Eu

mass number	164
neutron number	101
Relative Atomic Mass	163,942852943 ± 0,000002219 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	4,16 ± 0,19 s
spin	3
nuclear quadrupole moment
opdagelsesdato	2007
Paritet	-

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

¹⁶⁵Eu

mass number	165
neutron number	102
Relative Atomic Mass	164,94554007 ± 0,000005596 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	2,53 ± 0,25 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	2007
Paritet	+

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

¹⁶⁶Eu

mass number	166
neutron number	103
Relative Atomic Mass	165,949813 ± 0,000107 Da
g-factor	0
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	1,24 ± 0,12 s
spin	0
nuclear quadrupole moment	0
opdagelsesdato	2007
Paritet	-

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

¹⁶⁷Eu

mass number	167
neutron number	104
Relative Atomic Mass	166,953011 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	1,33 ± 0,51 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	2012
Paritet	+

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

¹⁶⁸Eu

mass number	168
neutron number	105
Relative Atomic Mass	167,957863 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	200 ± 100 ms
spin	6
nuclear quadrupole moment
opdagelsesdato	2012
Paritet	-

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

¹⁶⁹Eu

mass number	169
neutron number	106
Relative Atomic Mass	168,961717 ± 0,000537 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	5/2
nuclear quadrupole moment
opdagelsesdato	2018
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)

¹⁷⁰Eu

mass number	170
neutron number	107
Relative Atomic Mass	169,96687 ± 0,000537 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin
nuclear quadrupole moment
opdagelsesdato
Paritet

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

historie

opdager eller opfinder	Eugène Demarçay
fundsted	France
opdagelsesdato	1901
etymologi	Named for the continent of Europe.
udtale	yoo-RO-pi-em (engelsk)

source

Forekomst
Abundance in Earth's crust	2 mg/kg
natural abundance (verdenshave)	0,00000013 mg/L
natural abundance (menneskelige krop)
natural abundance (Meteoroid)	0,0000059 %
natural abundance (Solen)	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

Europium on ChemicalAid

Australian Educational Vocabulary ID	scot/3518
CAB ID	154848
CAS-nummer	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
Enciclopedia Treccani	europio
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-identifikator	4153210-7
ILI-ID	i113931
InChI	InChI=1S/Eu
InChIKey	OGPBJKLSAFTDLK-UHFFFAOYSA-N
KBpedia ID	Europium
LCAuth	sh85045863
MeSH ID	D005063
NALT ID	38725
Namuwiki ID	유로퓸
National Library of Israel J9U ID	987007560305105171
OmegaWiki-betydningsdefinition	158490
OpenAlex ID	C502696234
PubChem CID	23981
RxNorm ID	1311484
Store katalanske encyklopædi-ID	0107121
Store norske leksikon-ID	europium
Store russiske encyklopædi Online-ID	1974896
UNII	444W947O8O
USGS Thesaurus ID	1450
WordNet 3.1 Synset ID	14661354-n
ZVG-nummer	7630

Europium (Eu)

Fysisk Egenskab

Kemisk Egenskab

øvrige

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

historie

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