Eoraipiam (Eu)

chemical element with symbol Eu and atomic number 63

Atomic Number	63
Atomic Weight	151.964
Núicléónuimhir	153

Group
Period	6
Block	f

prótón	63 p⁺
neodrón	90 n⁰
leictreon	63 e^-

Physical Property

Ga Adamhach	185 pm 280 pm
molar volume	28.9 cm³/mol
covalent radius	168 pm 134 pm 198 pm
Metallic Radius
ionic 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
dlús	5.24 g/cm³ 5,130 kg/m³

Chemical Property

fuinneamh

proton affinity
electron affinity	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 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

enthalpy of vaporization	176 kJ/mol
enthalpy of fusion
eantalpacht chaighdeánach an fhoirmithe	177.4 kJ/mol
leictreon

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

Fiúsleictreon	2 ⓘ

cumraíocht leictreon	[Xe] 4f⁷ 6s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f⁷ 6s²

Staid ocsaídiúcháine	0, 2, 3
Leictridhiúltacht	0.189935
Electrophilicity Index	1.1104548254099753 eV/particle
fundamental state of matter

phase of matter	Solid
gaseous state of matter
Boiling Point	1,802.15 K
Melting Point	1,095.15 K
critical pressure
critical temperature
triple point
appearance
dath	Silver #ff1493 #61ffc7 #61ffc7
appearance
Comhéifeacht athraonta
thermodynamic material property
Thermal Conductivity	13.9 W/(m K)
Forbairt theirmeach	0.000035 1/K
molar heat capacity	27.66 J/(mol K)
Specific Heat Capacity	0.182 J/(g⋅K)
Cóimheas saintoilleadh teasa
electrical properties
type	Conductor
electrical conductivity	1.1 MS/m
Friotachas	0.0000009 Ω*m
Forsheoltacht	1.8 K
Maighnéadas
type	paramagnetic
So-ghabhálacht mhaighnéadach (Mass)	0.000000276 m³/Kg
So-ghabhálacht mhaighnéadach (Molar)	0.000000041942 m³/mol
So-ghabhálacht mhaighnéadach (Volume)	0.0014473
magnetic ordering
Teocht Curie
Néel temperature	90.5 K
struchtúr
Crystal Structure	Body Centered Cubic (BCC)
lattice constant	4.61 Å
Lattice Angles	π/2, π/2, π/2
airíonna meicniúla
Cruas	167 MPa
Modal toirte	8.3 GPa
modal fiartha	7.9 GPa
modal Young	18 GPa
Cóimheas Poisson	0.15
luas forleata fuaime
aicmiúchán
Category	Lanthanides, Lanthanides
CAS Group
IUPAC Group
Glawe Number	17
Mendeleev Number	25
Pettifor Number	18
Geochemical Class	rare earth & related
Goldschmidt classification	litophile

eile

Gas Basicity
polarizability	184 ± 20 a₀
C6 Dispersion Coefficient	2,940 a₀
allotrope
Crosghearradh	4,570
Neutron Mass Absorption	0.6
Uimhir chandamach	8S7/2
space group	229 (Im_3m)

Isotopes of Europium

Stable Isotopes	1
Unstable Isotopes	40
Natural Isotopes	2

¹³⁰Eu

Núicléónuimhir	130
neutron number	67
Mais Adamhach Choibhneasta	129.964022 ± 0.000578 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	1 ± 0.4 ms
Guairne	1
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2004
Paireacht	+

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

¹³¹Eu

Núicléónuimhir	131
neutron number	68
Mais Adamhach Choibhneasta	130.957634 ± 0.000429 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	17.8 ± 1.9 ms
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1998
Paireacht	+

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

¹³²Eu

Núicléónuimhir	132
neutron number	69
Mais Adamhach Choibhneasta	131.954696 ± 0.000429 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	1
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh
Paireacht	+

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

¹³³Eu

Núicléónuimhir	133
neutron number	70
Mais Adamhach Choibhneasta	132.94929 ± 0.00032 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	5/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh
Paireacht	+

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

¹³⁴Eu

Núicléónuimhir	134
neutron number	71
Mais Adamhach Choibhneasta	133.946537 ± 0.000322 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	500 ± 200 ms
Guairne
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1989
Paireacht

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

¹³⁵Eu

Núicléónuimhir	135
neutron number	72
Mais Adamhach Choibhneasta	134.94187 ± 0.00021 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	1.5 ± 0.2 s
Guairne	5/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1989
Paireacht	+

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

¹³⁶Eu

Núicléónuimhir	136
neutron number	73
Mais Adamhach Choibhneasta	135.93962 ± 0.00021 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	3.3 ± 0.3 s
Guairne	6
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1987
Paireacht	+

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

¹³⁷Eu

Núicléónuimhir	137
neutron number	74
Mais Adamhach Choibhneasta	136.935430719 ± 0.0000047 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	8.4 ± 0.5 s
Guairne	5/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1982
Paireacht	+

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

¹³⁸Eu

Núicléónuimhir	138
neutron number	75
Mais Adamhach Choibhneasta	137.933709 ± 0.00003 Da
G-fhachtóir	0.88333333333333 ± 0.11666666666667
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1982
Paireacht	-

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

¹³⁹Eu

Núicléónuimhir	139
neutron number	76
Mais Adamhach Choibhneasta	138.929792307 ± 0.000014117 Da
G-fhachtóir	1.1090909090909 ± 0.14545454545455
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	17.9 ± 0.6 s
Guairne	11/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1975
Paireacht

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

¹⁴⁰Eu

Núicléónuimhir	140
neutron number	77
Mais Adamhach Choibhneasta	139.928087633 ± 0.000055328 Da
G-fhachtóir	1.362 ± 0.013
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	1.51 ± 0.02 s
Guairne	1
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1982
Paireacht	+

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

¹⁴¹Eu

Núicléónuimhir	141
neutron number	78
Mais Adamhach Choibhneasta	140.924931734 ± 0.000013568 Da
G-fhachtóir	1.3944 ± 0.0032
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	40.7 ± 0.7 s
Guairne	5/2
nuclear quadrupole moment	0.85 ± 0.04
dáta fionnachtana nó tionscnaimh	1977
Paireacht	+

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

¹⁴²Eu

Núicléónuimhir	142
neutron number	79
Mais Adamhach Choibhneasta	141.923446719 ± 0.000032268 Da
G-fhachtóir	1.532 ± 0.019
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	2.36 ± 0.1 s
Guairne	1
nuclear quadrupole moment	0.12 ± 0.05
dáta fionnachtana nó tionscnaimh	1966
Paireacht	+

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

¹⁴³Eu

Núicléónuimhir	143
neutron number	80
Mais Adamhach Choibhneasta	142.920298678 ± 0.000011793 Da
G-fhachtóir	1.4656 ± 0.0032
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	2.59 ± 0.02 m
Guairne	5/2
nuclear quadrupole moment	0.51 ± 0.03
dáta fionnachtana nó tionscnaimh	1965
Paireacht	+

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

¹⁴⁴Eu

Núicléónuimhir	144
neutron number	81
Mais Adamhach Choibhneasta	143.918819481 ± 0.00001158 Da
G-fhachtóir	1.888 ± 0.013
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	10.2 ± 0.1 s
Guairne	1
nuclear quadrupole moment	0.1 ± 0.03
dáta fionnachtana nó tionscnaimh	1965
Paireacht	+

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

¹⁴⁵Eu

Núicléónuimhir	145
neutron number	82
Mais Adamhach Choibhneasta	144.916272659 ± 0.000003285 Da
G-fhachtóir	1.5932 ± 0.0028
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	5.93 ± 0.04 d
Guairne	5/2
nuclear quadrupole moment	0.29 ± 0.02
dáta fionnachtana nó tionscnaimh	1951
Paireacht	+

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

¹⁴⁶Eu

Núicléónuimhir	146
neutron number	83
Mais Adamhach Choibhneasta	145.917210852 ± 0.000006451 Da
G-fhachtóir	0.3555 ± 0.00275
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	4.61 ± 0.03 d
Guairne	4
nuclear quadrupole moment	-0.18 ± 0.06
dáta fionnachtana nó tionscnaimh	1957
Paireacht	-

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

¹⁴⁷Eu

Núicléónuimhir	147
neutron number	84
Mais Adamhach Choibhneasta	146.91675244 ± 0.000002758 Da
G-fhachtóir	1.486 ± 0.0032
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	24.1 ± 0.6 d
Guairne	5/2
nuclear quadrupole moment	0.55 ± 0.03
dáta fionnachtana nó tionscnaimh	1951
Paireacht	+

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

¹⁴⁸Eu

Núicléónuimhir	148
neutron number	85
Mais Adamhach Choibhneasta	147.918091288 ± 0.000010693 Da
G-fhachtóir	0.4668 ± 0.002
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	54.5 ± 0.5 d
Guairne	5
nuclear quadrupole moment	0.35 ± 0.06
dáta fionnachtana nó tionscnaimh	1951
Paireacht	-

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

¹⁴⁹Eu

Núicléónuimhir	149
neutron number	86
Mais Adamhach Choibhneasta	148.917936875 ± 0.00000419 Da
G-fhachtóir	1.4224 ± 0.0024
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	93.1 ± 0.4 d
Guairne	5/2
nuclear quadrupole moment	0.75 ± 0.02
dáta fionnachtana nó tionscnaimh	1959
Paireacht	+

decay mode	intensity
ϵ (electron capture)	100%

¹⁵⁰Eu

Núicléónuimhir	150
neutron number	87
Mais Adamhach Choibhneasta	149.919707092 ± 0.000006688 Da
G-fhachtóir	0.5404 ± 0.0022
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	36.9 ± 0.9 y
Guairne	5
nuclear quadrupole moment	1.13 ± 0.05
dáta fionnachtana nó tionscnaimh	1950
Paireacht	-

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

¹⁵¹Eu

Núicléónuimhir	151
neutron number	88
Mais Adamhach Choibhneasta	150.919856606 ± 0.000001251 Da
G-fhachtóir	1.3854 ± 0.001
natural abundance	47.81 ± 0.06
Meath radaighníomhach	☢️ radioactive element
leathré	4.6 ± 1.2 Ey
Guairne	5/2
nuclear quadrupole moment	0.903 ± 0.01
dáta fionnachtana nó tionscnaimh	1933
Paireacht	+

decay mode	intensity
α (α emission)	100%

¹⁵²Eu

Núicléónuimhir	152
neutron number	89
Mais Adamhach Choibhneasta	151.92175098 ± 0.000001252 Da
G-fhachtóir	-0.64513333333333 ± 0.00056666666666667
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	13.517 ± 0.006 y
Guairne	3
nuclear quadrupole moment	2.72 ± 0.03
dáta fionnachtana nó tionscnaimh	1938
Paireacht	-

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

¹⁵³Eu

Núicléónuimhir	153
neutron number	90
Mais Adamhach Choibhneasta	152.921236789 ± 0.000001257 Da
G-fhachtóir	0.61176 ± 0.00044
natural abundance	52.19 ± 0.06
Meath radaighníomhach	stable isotope
leathré	Not Radioactive ☢️
Guairne	5/2
nuclear quadrupole moment	2.41 ± 0.02
dáta fionnachtana nó tionscnaimh	1933
Paireacht	+

¹⁵⁴Eu

Núicléónuimhir	154
neutron number	91
Mais Adamhach Choibhneasta	153.922985699 ± 0.000001275 Da
G-fhachtóir	-0.66666666666667 ± 0.002
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	8.592 ± 0.003 y
Guairne	3
nuclear quadrupole moment	2.85 ± 0.1
dáta fionnachtana nó tionscnaimh	1947
Paireacht	-

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

¹⁵⁵Eu

Núicléónuimhir	155
neutron number	92
Mais Adamhach Choibhneasta	154.922899847 ± 0.000001343 Da
G-fhachtóir	0.6064 ± 0.0008
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	4.742 ± 0.008 y
Guairne	5/2
nuclear quadrupole moment	2.5 ± 0.3
dáta fionnachtana nó tionscnaimh	1947
Paireacht	+

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

¹⁵⁶Eu

Núicléónuimhir	156
neutron number	93
Mais Adamhach Choibhneasta	155.924762976 ± 0.000003791 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	15.19 ± 0.08 d
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	1947
Paireacht	+

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

¹⁵⁷Eu

Núicléónuimhir	157
neutron number	94
Mais Adamhach Choibhneasta	156.925432556 ± 0.000004545 Da
G-fhachtóir	0.6 ± 0.008
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	15.18 ± 0.03 h
Guairne	5/2
nuclear quadrupole moment	2.6 ± 0.3
dáta fionnachtana nó tionscnaimh	1951
Paireacht	+

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

¹⁵⁸Eu

Núicléónuimhir	158
neutron number	95
Mais Adamhach Choibhneasta	157.927782192 ± 0.000002181 Da
G-fhachtóir	1.44 ± 0.02
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	45.9 ± 0.2 m
Guairne	1
nuclear quadrupole moment	0.66 ± 0.14
dáta fionnachtana nó tionscnaimh	1951
Paireacht	-

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

¹⁵⁹Eu

Núicléónuimhir	159
neutron number	96
Mais Adamhach Choibhneasta	158.929099512 ± 0.000004637 Da
G-fhachtóir	0.552 ± 0.008
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	18.1 ± 0.1 m
Guairne	5/2
nuclear quadrupole moment	2.7 ± 0.3
dáta fionnachtana nó tionscnaimh	1961
Paireacht	+

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

¹⁶⁰Eu

Núicléónuimhir	160
neutron number	97
Mais Adamhach Choibhneasta	159.931836982 ± 0.00000097 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	42.6 ± 0.5 s
Guairne	5
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1973
Paireacht	-

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

¹⁶¹Eu

Núicléónuimhir	161
neutron number	98
Mais Adamhach Choibhneasta	160.933663991 ± 0.000011164 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	26.2 ± 2.3 s
Guairne	5/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1986
Paireacht	+

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

¹⁶²Eu

Núicléónuimhir	162
neutron number	99
Mais Adamhach Choibhneasta	161.936958329 ± 0.00000141 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	1
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1987
Paireacht	+

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

¹⁶³Eu

Núicléónuimhir	163
neutron number	100
Mais Adamhach Choibhneasta	162.93926551 ± 0.00000097 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	7.7 ± 0.4 s
Guairne	5/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2007
Paireacht	+

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

¹⁶⁴Eu

Núicléónuimhir	164
neutron number	101
Mais Adamhach Choibhneasta	163.942852943 ± 0.000002219 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	4.16 ± 0.19 s
Guairne	3
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2007
Paireacht	-

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

¹⁶⁵Eu

Núicléónuimhir	165
neutron number	102
Mais Adamhach Choibhneasta	164.94554007 ± 0.000005596 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	2.53 ± 0.25 s
Guairne	5/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2007
Paireacht	+

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

¹⁶⁶Eu

Núicléónuimhir	166
neutron number	103
Mais Adamhach Choibhneasta	165.949813 ± 0.000107 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	1.24 ± 0.12 s
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	2007
Paireacht	-

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

¹⁶⁷Eu

Núicléónuimhir	167
neutron number	104
Mais Adamhach Choibhneasta	166.953011 ± 0.000429 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	1.33 ± 0.51 s
Guairne	5/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2012
Paireacht	+

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

¹⁶⁸Eu

Núicléónuimhir	168
neutron number	105
Mais Adamhach Choibhneasta	167.957863 ± 0.000429 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	200 ± 100 ms
Guairne	6
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2012
Paireacht	-

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

¹⁶⁹Eu

Núicléónuimhir	169
neutron number	106
Mais Adamhach Choibhneasta	168.961717 ± 0.000537 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	5/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2018
Paireacht	+

decay mode	intensity
β⁻ (β⁻ decay)

¹⁷⁰Eu

Núicléónuimhir	170
neutron number	107
Mais Adamhach Choibhneasta	169.96687 ± 0.000537 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh
Paireacht

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

stair

fionnachtaí nó aireagóir	Eugène Demarçay
áit ar tháinig air/uirthi	France
dáta fionnachtana nó tionscnaimh	1901
Sanasaíocht	Named for the continent of Europe.
pronunciation	yoo-RO-pi-em (Béarla)

foinse

Abundance
Abundance in Earth's crust	2 mg/kg
natural abundance (aigéan)	0.00000013 mg/L
natural abundance (corp an duine)
natural abundance (dreigeoideach)	0.0000059 %
natural abundance (An Ghrian)	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

Eoraipiam on ChemicalAid

Eoraipiam (Eu)

Physical Property

Chemical Property

eile

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

stair

foinse

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