Erbiyûm (Er)

chemical element with atomic number 68

Atomic Number	68
Atomic Weight	167.259
Hejmara baristeyî	166

Group
Period	6
Block	f

Proton	68 p⁺
Notron	98 n⁰
Kareva	68 e^-

Physical Property

Atomic Radius	175 pm 272 pm
molar volume	18,4 cm³/mol
Covalent Radius	165 pm 133 pm 189 pm
Metallic Radius
ionic radius	89 pm 94,5 pm 100,4 pm 106,2 pm
Crystal Radius	103 pm 108,5 pm 114,4 pm 120,2 pm
Van der Waals radius	229 pm 267 pm 339,1 pm
density	9,07 g/cm³ 8.860 kg/m³

Chemical Property

wize

proton affinity
electron affinity
ionization energy	6,1077 eV/particle 11,93 eV/particle 22,74 eV/particle 42,7 eV/particle 65,1 eV/particle 96 eV/particle 114 eV/particle 131 eV/particle 158 eV/particle 177 eV/particle 201 eV/particle 235 eV/particle 268 eV/particle 290 eV/particle 311 eV/particle 345 eV/particle 381 eV/particle 415 eV/particle 450 eV/particle 486 eV/particle 520 eV/particle 555 eV/particle 770 eV/particle 810 eV/particle 853 eV/particle 899 eV/particle 943 eV/particle 989 eV/particle 1.046 eV/particle 1.092 eV/particle 1.142 eV/particle 1.188 eV/particle 1.370 eV/particle 1.416 eV/particle 1.468 eV/particle 1.516 eV/particle 1.625 eV/particle 1.678 eV/particle 1.803 eV/particle 1.859 eV/particle 3.157 eV/particle 3.265 eV/particle 3.381 eV/particle 3.505 eV/particle 3.624 eV/particle 3.742 eV/particle 3.916 eV/particle 4.038 eV/particle 4.170 eV/particle 4.294 eV/particle 4.639 eV/particle 4.748 eV/particle 4.866 eV/particle 4.978 eV/particle 5.329 eV/particle 5.455 eV/particle 5.695 eV/particle 5.815 eV/particle 12.918 eV/particle 13.217 eV/particle 13.548 eV/particle 13.855 eV/particle 15.146 eV/particle 15.511 eV/particle 15.971 eV/particle 16.274,56 eV/particle 65.848,24 eV/particle 67.241,85 eV/particle

enthalpy of vaporization	317 kJ/mol
enthalpy of fusion
standard enthalpy of formation	316,4 kJ/mol
Kareva

electron shell	2, 8, 18, 30, 8, 2

valence electron	2 ⓘ

electron configuration	[Xe] 4f¹² 6s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f¹² 6s²

oxidation number	0, 2, 3
electronegativity	0.212261 1.24
Electrophilicity Index
fundamental state of matter

phase of matter	Solid
gaseous state of matter
Boiling Point	3.141,15 K
Melting Point	1.802,15 K
critical pressure
critical temperature
triple point
appearance
color	Silver #ff1493 #00e675 #00e675
appearance	silvery white
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion	0,0000122 1/K
molar heat capacity	28,12 J/(mol K)
Specific Heat Capacity	0,168 J/(g⋅K)
heat capacity ratio
electrical properties
type	Conductor
electrical conductivity	1,2 MS/m
electrical resistivity	0,00000086 Ω*m
superconductivity
magnetism
type	paramagnetic
magnetic susceptibility (Mass)	0,00000377 m³/Kg
magnetic susceptibility (Molar)	0,000000630566 m³/mol
magnetic susceptibility (Volume)	0,0341788
magnetic ordering
Germahiya Curie	32 K
Néel temperature	82 K
pêkhate
Crystal Structure	Simple Hexagonal (HEX)
lattice constant	3,56 Å
Lattice Angles	π/2, π/2, 2 π/3
mechanical property
hardness	814 MPa 589 MPa
bulk modulus	44 GPa
shear modulus	28 GPa
Young's modulus	70 GPa
Poisson's ratio	0,24
Leza dengê	2.830 m/s
classification
Category	Lanthanides, Lanthanides
CAS Group
IUPAC Group
Glawe Number	22
Mendeleev Number	35
Pettifor Number	23
Geochemical Class	rare earth & related
Goldschmidt classification	litophile

other

Gas Basicity
polarizability	150 ± 10 a₀
C6 Dispersion Coefficient	2.150 a₀
allotrope
Neutron cross section	165
Neutron Mass Absorption	0,036
quantum number	3H6
space group	194 (P63/mmc)

Isotopes of Erbium

Stable Isotopes	3
Unstable Isotopes	36
Natural Isotopes	6

¹⁴²Er

Hejmara baristeyî	142
neutron number	74
Giraniya Atomê	141,970016 ± 0,000537 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê
parity	+

decay mode	intensity
p (proton emission)

¹⁴³Er

Hejmara baristeyî	143
neutron number	75
Giraniya Atomê	142,966548 ± 0,000429 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê	2005
parity	-

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

¹⁴⁴Er

Hejmara baristeyî	144
neutron number	76
Giraniya Atomê	143,9607 ± 0,00021 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	2003
parity	+

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

¹⁴⁵Er

Hejmara baristeyî	145
neutron number	77
Giraniya Atomê	144,957874 ± 0,000215 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	900 ± 200 ms
spin	1/2
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1989
parity	+

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

¹⁴⁶Er

Hejmara baristeyî	146
neutron number	78
Giraniya Atomê	145,952418357 ± 0,000007197 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	1,7 ± 0,6 s
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1993
parity	+

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

¹⁴⁷Er

Hejmara baristeyî	147
neutron number	79
Giraniya Atomê	146,949964456 ± 0,000041 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	3,2 ± 1,2 s
spin	1/2
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1992
parity	+

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

¹⁴⁸Er

Hejmara baristeyî	148
neutron number	80
Giraniya Atomê	147,944735026 ± 0,000011 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	4,6 ± 0,2 s
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1982
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	0.15%

¹⁴⁹Er

Hejmara baristeyî	149
neutron number	81
Giraniya Atomê	148,942306 ± 0,00003 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	4 ± 2 s
spin	1/2
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1984
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	7%

¹⁵⁰Er

Hejmara baristeyî	150
neutron number	82
Giraniya Atomê	149,937915524 ± 0,000018458 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	18,5 ± 0,7 s
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1982
parity	+

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

¹⁵¹Er

Hejmara baristeyî	151
neutron number	83
Giraniya Atomê	150,937448567 ± 0,000017681 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	23,5 ± 2 s
spin	7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê	1970
parity	-

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

¹⁵²Er

Hejmara baristeyî	152
neutron number	84
Giraniya Atomê	151,935050347 ± 0,000009478 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	10,3 ± 0,1 s
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1963
parity	+

decay mode	intensity
α (α emission)	90%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	10%

¹⁵³Er

Hejmara baristeyî	153
neutron number	85
Giraniya Atomê	152,93508635 ± 0,000009967 Da
g-factor	-0,26628571428571 ± 0,002
natural abundance
radioactivity	☢️ radioactive element
half-life	37,1 ± 0,2 s
spin	7/2
nuclear quadrupole moment	-0,42 ± 0,02
dema îcadkirinê yan keşfê	1963
parity	-

decay mode	intensity
α (α emission)	53%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	47%

¹⁵⁴Er

Hejmara baristeyî	154
neutron number	86
Giraniya Atomê	153,932790799 ± 0,000005325 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	3,73 ± 0,09 m
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1963
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)	0.47%

¹⁵⁵Er

Hejmara baristeyî	155
neutron number	87
Giraniya Atomê	154,93321571 ± 0,00000652 Da
g-factor	-0,19028571428571 ± 0,0014285714285714
natural abundance
radioactivity	☢️ radioactive element
half-life	5,3 ± 0,3 m
spin	7/2
nuclear quadrupole moment	-0,27 ± 0,02
dema îcadkirinê yan keşfê	1969
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	99.978%
α (α emission)	0.022%

¹⁵⁶Er

Hejmara baristeyî	156
neutron number	88
Giraniya Atomê	155,931065926 ± 0,00002644 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	19,5 ± 1 m
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1967
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)	1.2%

¹⁵⁷Er

Hejmara baristeyî	157
neutron number	89
Giraniya Atomê	156,931922652 ± 0,000028454 Da
g-factor	-0,274 ± 0,002
natural abundance
radioactivity	☢️ radioactive element
half-life	18,65 ± 0,1 m
spin	3/2
nuclear quadrupole moment	0,92 ± 0,01
dema îcadkirinê yan keşfê	1966
parity	-

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

¹⁵⁸Er

Hejmara baristeyî	158
neutron number	90
Giraniya Atomê	157,929893474 ± 0,000027074 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	2,29 ± 0,06 h
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1961
parity	+

decay mode	intensity
ϵ (electron capture)	100%

¹⁵⁹Er

Hejmara baristeyî	159
neutron number	91
Giraniya Atomê	158,93069079 ± 0,00000391 Da
g-factor	-0,202 ± 0,0013333333333333
natural abundance
radioactivity	☢️ radioactive element
half-life	36 ± 1 m
spin	3/2
nuclear quadrupole moment	1,17 ± 0,01
dema îcadkirinê yan keşfê	1962
parity	-

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

¹⁶⁰Er

Hejmara baristeyî	160
neutron number	92
Giraniya Atomê	159,929077193 ± 0,000026029 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	28,58 ± 0,09 h
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1954
parity	+

decay mode	intensity
ϵ (electron capture)	100%

¹⁶¹Er

Hejmara baristeyî	161
neutron number	93
Giraniya Atomê	160,93000353 ± 0,000009419 Da
g-factor	-0,24266666666667 ± 0,002
natural abundance
radioactivity	☢️ radioactive element
half-life	3,21 ± 0,03 h
spin	3/2
nuclear quadrupole moment	1,363 ± 0,008
dema îcadkirinê yan keşfê	1954
parity	-

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

¹⁶²Er

Hejmara baristeyî	162
neutron number	94
Giraniya Atomê	161,928787299 ± 0,000000811 Da
g-factor	0
natural abundance	0,139 ± 0,005
radioactivity	☢️ radioactive element
half-life
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1938
parity	+

decay mode	intensity
α (α emission)
2β⁺ (double β⁺ decay)

¹⁶³Er

Hejmara baristeyî	163
neutron number	95
Giraniya Atomê	162,930039908 ± 0,000004967 Da
g-factor	0,2224 ± 0,0016
natural abundance
radioactivity	☢️ radioactive element
half-life	75 ± 0,4 m
spin	5/2
nuclear quadrupole moment	2,56 ± 0,02
dema îcadkirinê yan keşfê	1953
parity	-

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

¹⁶⁴Er

Hejmara baristeyî	164
neutron number	96
Giraniya Atomê	163,929207739 ± 0,000000755 Da
g-factor	0
natural abundance	1,601 ± 0,003
radioactivity	☢️ radioactive element
half-life
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1938
parity	+

decay mode	intensity
α (α emission)
2β⁺ (double β⁺ decay)

¹⁶⁵Er

Hejmara baristeyî	165
neutron number	97
Giraniya Atomê	164,930733482 ± 0,000000985 Da
g-factor	0,2564 ± 0,0016
natural abundance
radioactivity	☢️ radioactive element
half-life	10,36 ± 0,04 h
spin	5/2
nuclear quadrupole moment	2,71 ± 0,03
dema îcadkirinê yan keşfê	1950
parity	-

decay mode	intensity
ϵ (electron capture)	100%

¹⁶⁶Er

Hejmara baristeyî	166
neutron number	98
Giraniya Atomê	165,930301067 ± 0,000000358 Da
g-factor	0
natural abundance	33,503 ± 0,036
radioactivity	stable isotope
half-life	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1934
parity	+

¹⁶⁷Er

Hejmara baristeyî	167
neutron number	99
Giraniya Atomê	166,932056192 ± 0,000000306 Da
g-factor	-0,16065714285714 ± 0,00011428571428571
natural abundance	22,869 ± 0,009
radioactivity	stable isotope
half-life	Not Radioactive ☢️
spin	7/2
nuclear quadrupole moment	3,57 ± 0,03
dema îcadkirinê yan keşfê	1934
parity	+

¹⁶⁸Er

Hejmara baristeyî	168
neutron number	100
Giraniya Atomê	167,932378282 ± 0,00000028 Da
g-factor	0
natural abundance	26,978 ± 0,018
radioactivity	stable isotope
half-life	Not Radioactive ☢️
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1934
parity	+

¹⁶⁹Er

Hejmara baristeyî	169
neutron number	101
Giraniya Atomê	168,934598444 ± 0,000000326 Da
g-factor	0,9656 ± 0,0008
natural abundance
radioactivity	☢️ radioactive element
half-life	9,392 ± 0,018 d
spin	1/2
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1956
parity	-

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

¹⁷⁰Er

Hejmara baristeyî	170
neutron number	102
Giraniya Atomê	169,935471933 ± 0,000001488 Da
g-factor	0
natural abundance	14,91 ± 0,036
radioactivity	☢️ radioactive element
half-life
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1934
parity	+

decay mode	intensity
2β⁻ (double β⁻ decay)
α (α emission)

¹⁷¹Er

Hejmara baristeyî	171
neutron number	103
Giraniya Atomê	170,938037372 ± 0,000001511 Da
g-factor	0,2628 ± 0,004
natural abundance
radioactivity	☢️ radioactive element
half-life	7,516 ± 0,002 h
spin	5/2
nuclear quadrupole moment	2,86 ± 0,09
dema îcadkirinê yan keşfê	1938
parity	-

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

¹⁷²Er

Hejmara baristeyî	172
neutron number	104
Giraniya Atomê	171,939363461 ± 0,000004253 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	49,3 ± 0,5 h
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1956
parity	+

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

¹⁷³Er

Hejmara baristeyî	173
neutron number	105
Giraniya Atomê	172,9424 ± 0,00021 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,434 ± 0,017 m
spin	7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê	1972
parity	-

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

¹⁷⁴Er

Hejmara baristeyî	174
neutron number	106
Giraniya Atomê	173,94423 ± 0,00032 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life	3,2 ± 0,2 m
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	1989
parity	+

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

¹⁷⁵Er

Hejmara baristeyî	175
neutron number	107
Giraniya Atomê	174,94777 ± 0,00043 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life	1,2 ± 0,3 m
spin	9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê	1996
parity	+

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

¹⁷⁶Er

Hejmara baristeyî	176
neutron number	108
Giraniya Atomê	175,94994 ± 0,00043 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	2012
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

¹⁷⁷Er

Hejmara baristeyî	177
neutron number	109
Giraniya Atomê	176,95399 ± 0,00054 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	1/2
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	2012
parity	-

decay mode	intensity
β⁻ (β⁻ decay)

¹⁷⁸Er

Hejmara baristeyî	178
neutron number	110
Giraniya Atomê	177,956779 ± 0,00064 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	2012
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

¹⁷⁹Er

Hejmara baristeyî	179
neutron number	111
Giraniya Atomê	178,961267 ± 0,000537 Da
g-factor
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê	2018
parity	-

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

¹⁸⁰Er

Hejmara baristeyî	180
neutron number	112
Giraniya Atomê	179,96438 ± 0,000537 Da
g-factor	0
natural abundance
radioactivity	☢️ radioactive element
half-life
spin	0
nuclear quadrupole moment	0
dema îcadkirinê yan keşfê	2018
parity	+

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

dîrok

kaşîf an îcadker	Carl Mosander
location of discovery	Sweden
dema îcadkirinê yan keşfê	1843
Bêjenasî	Named after the Swedish town, Ytterby.
pronunciation	UR-bi-em (îngilîzî)

source

Abundance
Abundance in Earth's crust	3,5 mg/kg
natural abundance (Okyanûs)	0,00000087 mg/L
natural abundance (human body)
natural abundance (meteoroid)	0,000018 %
natural abundance (Roj)	0,0000001 %
Abundance in Universe	0,0000002 %

Nuclear Screening Constants

1	s	1.3263
2	p	4.346
2	s	17.7984
3	d	13.6397
3	p	20.3891
3	s	20.9231
4	d	35.7288
4	f	40.0216
4	p	32.8908
4	s	31.768
5	p	50.528
5	s	48.282
6	s	59.5238

Erbiyûm on ChemicalAid

erbium

Australian Educational Vocabulary ID	scot/3517
Brockhaus Enzyklopädie online ID	er-30
CAS Registry Number	7440-52-0
ChEBI ID	33379
ChemSpider ID	22416
DSSTOX compound identifier	DTXCID1047659
DSSTox substance ID	DTXSID8064694
De Agostini ID	èrbio
Den Store Danske ID	erbium
ECHA Substance Infocard ID	100.028.327
Elhuyar ZTH ID	023062
Encyclopædia Britannica Online ID	science/erbium
Encyclopædia Universalis ID	erbium
Freebase ID	/m/028bg3q
GND ID	4152588-7
Great Russian Encyclopedia Online ID	4937360
InChI	InChI=1S/Er
InChIKey	UYAHIZSMUZPPFV-UHFFFAOYSA-N
KBpedia ID	Erbium
Library of Congress authority ID	sh85044573
MeSH descriptor ID	D004871
NALT ID	37808
Namuwiki ID	어븀
National Library of Israel J9U ID	987007552901505171
OmegaWiki Defined Meaning	158202
OpenAlex ID	C513967374
PubChem CID	23980
RxNorm ID	1311483
Römpp online ID	RD-05-01479
Store norske leksikon ID	erbium
Treccani ID	erbio
UNII	77B218D3YE
USGS Thesaurus ID	1447
WordNet 3.1 Synset ID	14661166-n
YSO ID	38979
ZVG number	7680

Erbiyûm (Er)

Physical Property

Chemical Property

other

Isotopes of Erbium

142Er

143Er

144Er

145Er

146Er

147Er

148Er

149Er

150Er

151Er

152Er

153Er

154Er

155Er

156Er

157Er

158Er

159Er

160Er

161Er

162Er

163Er

164Er

165Er

166Er

167Er

168Er

169Er

170Er

171Er

172Er

173Er

174Er

175Er

176Er

177Er

178Er

179Er

180Er

dîrok

source

Nuclear Screening Constants

¹⁴²Er

¹⁴³Er

¹⁴⁴Er

¹⁴⁵Er

¹⁴⁶Er

¹⁴⁷Er

¹⁴⁸Er

¹⁴⁹Er

¹⁵⁰Er

¹⁵¹Er

¹⁵²Er

¹⁵³Er

¹⁵⁴Er

¹⁵⁵Er

¹⁵⁶Er

¹⁵⁷Er

¹⁵⁸Er

¹⁵⁹Er

¹⁶⁰Er

¹⁶¹Er

¹⁶²Er

¹⁶³Er

¹⁶⁴Er

¹⁶⁵Er

¹⁶⁶Er

¹⁶⁷Er

¹⁶⁸Er

¹⁶⁹Er

¹⁷⁰Er

¹⁷¹Er

¹⁷²Er

¹⁷³Er

¹⁷⁴Er

¹⁷⁵Er

¹⁷⁶Er

¹⁷⁷Er

¹⁷⁸Er

¹⁷⁹Er

¹⁸⁰Er