铒的同位素

铒（原子量：167.259(3)）的同位素，其中有6个同位素是在观测上稳定的。

**图表**
142Er
68
74
141.97002(54)#
10# μs
p
141Ho
0+
143Er
68
75
142.96655(43)#
200# ms
β+
143Ho
9/2−#
β+, p
142Dy
144Er
68
76
143.96038(43)#
400# ms >200 ns
β+
144Ho
0+
145Er
68
77
144.95739(43)#
900(300) ms
β+
145Ho
1/2+#
β+, p （不常见）
144Dy
146Er
68
78
145.95200(32)#
1.7(6) s
β+
146Ho
0+

β+, p
145Dy
147Er
68
79
146.94949(32)#
~2.5 s
β+
147Ho
(1/2+)
β+, p
146Dy
147mEr
100(50)# keV
2.5(2) s
β+
147Ho
(11/2-)
148Er
68
80
147.94455(21)#
4.6(2) s
β+ (99.85%)
148Ho
0+
β+, p (.15%)
147Dy
149Er
68
81
148.94231(3)
4(2) s
β+ (93%)
149Ho
(1/2+)
β+, p (7%)
148Dy
149m1Er
741.8(2) keV
8.9(2) s
β+ (96.5%)
149Ho
(11/2-)
IT (3.5%)
149Er
β+, p (.18%)
148Dy
149m2Er
2611.1(3) keV
0.61(8) µs
(19/2+)
149m3Er
3242.7+X keV
4.8(1) µs
(27/2-)
150Er
68
82
149.937914(18)
18.5(7) s
β+
150Ho
0+
151Er
68
83
150.937449(18)
23.5(13) s
β+
151Ho
(7/2-)
151m1Er
2585.5(6) keV
580(20) ms
IT (95.3%)
151Er
(27/2-)
β+ (4.7%)
151Ho
151m2Er
10286+X keV
0.42(5) µs
(67/2,69/2,71/2)
152Er
68
84
151.935050(11)
10.3(1) s
α (90%)
148Dy
0+
β+ (10%)
152Ho
153Er
68
85
152.935063(9)
37.1(2) s
α (53%)
149Dy
7/2(-)
β+ (47%)
153Ho
154Er
68
86
153.932783(6)
3.73(9) min
β+ (99.53%)
154Ho
0+
α (.47%)
150Dy
155Er
68
87
154.933209(7)
5.3(3) min
β+ (99.98%)
155Ho
7/2-
α (.022%)
151Dy
156Er
68
88
155.931065(26)
19.5(10) min
β+
156Ho
0+
157Er
68
89
156.93192(3)
18.65(10) min
β+
157Ho
3/2-
157mEr
155.4(3) keV
76(6) ms
IT
157Er
(9/2+)
158Er
68
90
157.929893(27)
2.29(6) h
EC
158Ho
0+
159Er
68
91
158.930684(5)
36(1) min
β+
159Ho
3/2-
159m1Er
182.602(24) keV
337(14) ns
9/2+
159m2Er
429.05(3) keV
590(60) ns
11/2-
160Er
68
92
159.929083(26)
28.58(9) h
EC
160Ho
0+
161Er
68
93
160.929995(10)
3.21(3) h
β+
161Ho
3/2-
161mEr
396.44(4) keV
7.5(7) µs
11/2-
162Er
68
94
161.928778(4)
观测上稳定
0+
0.00139(5)
163Er
68
95
162.930033(6)
75.0(4) min
β+
163Ho
5/2-
163mEr
445.5(6) keV
580(100) ns
(11/2-)
164Er
68
96
163.929200(3)
观测上稳定
0+
0.01601(3)
165Er
68
97
164.930726(3)
10.36(4) h
EC
165Ho
5/2-
166Er
68
98
165.9302931(27)
观测上稳定
0+
0.33503(36)
167Er
68
99
166.9320482(27)
观测上稳定
7/2+
0.22869(9)
167mEr
207.801(5) keV
2.269(6) s
IT
167Er
1/2-
168Er
68
100
167.9323702(27)
观测上稳定
0+
0.26978(18)
169Er
68
101
168.9345904(27)
9.392(18) d
β-
169Tm
1/2-
170Er
68
102
169.9354643(30)
观测上稳定
0+
0.14910(36)
171Er
68
103
170.9380298(30)
7.516(2) h
β-
171Tm
5/2-
171mEr
198.6(1) keV
210(10) ns
1/2-
172Er
68
104
171.939356(5)
49.3(3) h
β-
172Tm
0+
173Er
68
105
172.94240(21)#
1.434(17) min
β-
173Tm
(7/2-)
174Er
68
106
173.94423(32)#
3.2(2) min
β-
174Tm
0+
175Er
68
107
174.94777(43)#
1.2(3) min
β-
175Tm
(9/2+)
176Er
68
108
175.95008(43)#
20# s
β-
176Tm
0+
177Er
68
109
176.95405(54)#
3# s
β-
177Tm
1/2-#

**参考文献**
 Isotope masses from  Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).- Isotopic compositions and standard atomic masses from  Atomic weights of the elements. Review 2000 (IUPAC Technical Report) date=20110324090740 . Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and  Atomic Weights Revised (2005) date=20080305062433 .- Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
** Audi, Bersillon, Blachot, Wapstra.  The Nubase2003 evaluation of nuclear and decay properties date=20110716114059 , Nuc. Phys. A 729, pp. 3-128 (2003).
** National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the  NuDat 2.1 database date=20190513230730  (retrieved Sept. 2005).
** David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.