Isotop holmium

**[[Holmium]]** (**<sub>67</sub>Ho**) yang terbentuk secara alami hanya terdiri dari satu isotop stabil, 165Ho. Tabel di bawah ini mencantumkan 36 isotop yang mencakup 140Ho hingga 175Ho serta 33 isomer nuklir. Di antara isotop radioaktif sintetis yang diketahui, yang paling stabil adalah 163Ho, dengan waktu paruh 4.570 tahun. Semua radioisotop lain memiliki waktu paruh tidak lebih dari 1,117 hari dalam keadaan dasarnya (walaupun 166m1Ho yang metastabil memiliki waktu paruh sekitar 1.200 tahun), dan sebagian besar memiliki waktu paruh di bawah 3 jam.

Holmium merupakan unsur paling ringan yang satu-satunya isotop alaminya stabil secara pengamatan, artinya diperkirakan bersifat radioaktif dan meluruh, tetapi peluruhan sebenarnya belum teramati. Jika 165Ho ditemukan menjadi radioaktif, maka holmium akan menjadi unsur tanpa isotop stabil paling ringan ketiga (keempat jika samarium (*[[Nomor atom|Z]]* = 62) atau europium (*Z* = 63) juga radioaktif, kelima jika samarium dan europium juga radioaktif), setelah teknesium (*Z* = 43) dan prometium (*Z* = 61).

## Daftar isotop

|-
| 140Ho
| style="text-align:right" | 67
| style="text-align:right" | 73
| 139,96854(54)#
| 6(3) mdtk
|
|
| 8+#
| 
| 
|-
| 141Ho
| style="text-align:right" | 67
| style="text-align:right" | 74
| 140,96310(54)#
| 4,1(3)&nbsp;mdtk
|
|
| (7/2−)
| 
| 
|-
| style="text-indent:1em" | 141mHo
| colspan="3" style="text-indent:2em" | 66(2)&nbsp;keV
| 6,4(8)&nbsp;µdtk
|
|
| (1/2+)
|
|
|-
| rowspan=2|142Ho
| rowspan=2 style="text-align:right" | 67
| rowspan=2 style="text-align:right" | 75
| rowspan=2|141,95977(54)#
| rowspan=2|400(100)&nbsp;mdtk
| β<sup>+</sup>
| 142Dy
| rowspan=2|(6 hingga 9)
| rowspan=2|
| rowspan=2|
|-
| p
| 141Dy
|- 
| 143Ho
| style="text-align:right" | 67
| style="text-align:right" | 76
| 142,95461(43)#
| 300#&nbsp;mdtk[>200&nbsp;ndtk]
| β+
| 143Dy
| 11/2−#
|
|
|-
| rowspan=2|144Ho
| rowspan=2 style="text-align:right" | 67
| rowspan=2 style="text-align:right" | 77
| rowspan=2|143,95148(32)#
| rowspan=2|0,7(1)&nbsp;dtk
| β+
| 144Dy
| rowspan=2|
| rowspan=2|
| rowspan=2|
|-
| β+, p
| 143Tb
|-
| 145Ho
| style="text-align:right" | 67
| style="text-align:right" | 78
| 144,94720(32)#
| 2,4(1)&nbsp;dtk
| β+
| 145Dy
| (11/2−)
|
|
|-
| style="text-indent:1em" | 145mHo
| colspan="3" style="text-indent:2em" | 100(100)#&nbsp;keV
| 100#&nbsp;mdtk
|
|
| 5/2+#
|
|
|-
| rowspan=2|146Ho
| rowspan=2 style="text-align:right" | 67
| rowspan=2 style="text-align:right" | 79
| rowspan=2|145,94464(21)#
| rowspan=2|3,6(3)&nbsp;dtk
| β+
| 146Dy
| rowspan=2|(10+)
| rowspan=2|
| rowspan=2|
|-
| β+, p (langka)
| 145Tb
|-
| rowspan=2|147Ho
| rowspan=2 style="text-align:right" | 67
| rowspan=2 style="text-align:right" | 80
| rowspan=2|146,94006(3)
| rowspan=2|5,8(4)&nbsp;dtk
| β+
| 147Dy
| rowspan=2|(11/2−)
| rowspan=2|
| rowspan=2|
|-
| β+, p (langka)
| 146Tb
|-
| 148Ho
| style="text-align:right" | 67
| style="text-align:right" | 81
| 147,93772(14)
| 2,2(11)&nbsp;dtk
| β+
| 148Dy
| (1+)
| 
| 
|-
| rowspan=2 style="text-indent:1em" | 148m1Ho
| rowspan=2 colspan="3" style="text-indent:2em" | 400(100)#&nbsp;keV
| rowspan=2|9,49(12)&nbsp;dtk
| β+ (99,92%)
| 148Dy
| rowspan=2|(6)−
| rowspan=2|
| rowspan=2|
|-
| β+, p (0,08%)
| 147Tb
|-
| style="text-indent:1em" | 148m2Ho
| colspan="3" style="text-indent:2em" | 690(100)#&nbsp;keV
| 2,35(4)&nbsp;mdtk
|
|
| (10+)
|
|
|-
| 149Ho
| style="text-align:right" | 67
| style="text-align:right" | 82
| 148,933775(20)
| 21,1(2)&nbsp;dtk
| β+
| 149Dy
| (11/2−)
|
|
|-
| style="text-indent:1em" | 149m1Ho
| colspan="3" style="text-indent:2em" | 48,80(20)&nbsp;keV
| 56(3)&nbsp;dtk
| β+
| 149Dy
| (1/2+)
|
|
|-
| style="text-indent:1em" | 149m2Ho
| colspan="3" style="text-indent:2em" | 7200(350)&nbsp;keV
| >=100&nbsp;ndtk
|
|
|
|
|
|-
| 150Ho
| style="text-align:right" | 67
| style="text-align:right" | 83
| 149,933496(15)
| 76,8(18)&nbsp;dtk
| β+
| 150Dy
| 2−
|
|
|-
| style="text-indent:1em" | 150m1Ho
| colspan="3" style="text-indent:2em" | -10(50)&nbsp;keV
| 23,3(3)&nbsp;dtk
| β+
| 150Dy
| (9)+
|
|
|-
| style="text-indent:1em" | 150m2Ho
| colspan="3" style="text-indent:2em" | ~8000&nbsp;keV
| 751&nbsp;ndtk
|
|
|
|
|
|-
| rowspan=2|151Ho
| rowspan=2 style="text-align:right" | 67
| rowspan=2 style="text-align:right" | 84
| rowspan=2|150,931688(13)
| rowspan=2|35,2(1)&nbsp;dtk
| β+ (78%)
| 151Dy
| rowspan=2|11/2(−)
| rowspan=2|
| rowspan=2|
|-
| α (22%)
| 147Tb
|-
| rowspan=2 style="text-indent:1em" | 151mHo
| rowspan=2 colspan="3" style="text-indent:2em" | 41,0(2)&nbsp;keV
| rowspan=2|47,2(10)&nbsp;dtk
| α (77%)
| 147Tb
| rowspan=2|1/2(+)
| rowspan=2|
| rowspan=2|
|-
| β+ (22%)
| 151Dy
|-
| rowspan=2|152Ho
| rowspan=2 style="text-align:right" | 67
| rowspan=2 style="text-align:right" | 85
| rowspan=2|151,931714(15)
| rowspan=2|161,8(3)&nbsp;dtk
| β+ (88%)
| 152Dy
| rowspan=2|2−
| rowspan=2|
| rowspan=2|
|-
| α (12%)
| 148Tb
|-
| style="text-indent:1em" | 152m1Ho
| colspan="3" style="text-indent:2em" | 160(1)&nbsp;keV
| 50,0(4)&nbsp;dtk
|
|
| 9+
|
|
|-
| style="text-indent:1em" | 152m2Ho
| colspan="3" style="text-indent:2em" | 3019,59(19)&nbsp;keV
| 8,4(3)&nbsp;µdtk
|
|
| 19−
|
|
|-
| rowspan=2|153Ho
| rowspan=2 style="text-align:right" | 67
| rowspan=2 style="text-align:right" | 86
| rowspan=2|152,930199(6)
| rowspan=2|2,01(3)&nbsp;mnt
| β+ (99,94%)
| 153Dy
| rowspan=2|11/2−
| rowspan=2|
| rowspan=2|
|-
| α (0,05%)
| 149Tb
|-
| rowspan=2 style="text-indent:1em" | 153m1Ho
| rowspan=2 colspan="3" style="text-indent:2em" | 68,7(3)&nbsp;keV
| rowspan=2|9,3(5)&nbsp;mnt
| β+ (99,82%)
| 153Dy
| rowspan=2|1/2+
| rowspan=2|
| rowspan=2|
|-
| α (0,18%)
| 149Tb
|-
| style="text-indent:1em" | 153m2Ho
| colspan="3" style="text-indent:2em" | 2772&nbsp;keV
| 229(2)&nbsp;ndtk
|
|
| (31/2+)
|
|
|-
| rowspan=2|154Ho
| rowspan=2 style="text-align:right" | 67
| rowspan=2 style="text-align:right" | 87
| rowspan=2|153,930602(9)
| rowspan=2|11,76(19)&nbsp;mnt
| β+ (99,98%)
| 154Dy
| rowspan=2|2−
| rowspan=2|
| rowspan=2|
|-
| α (0,02%)
| 150Tb
|-
| rowspan=3 style="text-indent:1em" | 154mHo
| rowspan=3 colspan="3" style="text-indent:2em" | 238(30)&nbsp;keV
| rowspan=3|3,10(14)&nbsp;mnt
| β+ (99,99%)
| 154Dy
| rowspan=3|8+
| rowspan=3|
| rowspan=3|
|-
| α (0,001%)
| 150Tb
|-
| IT (langka)
| 154Ho
|-
| 155Ho
| style="text-align:right" | 67
| style="text-align:right" | 88
| 154,929103(19)
| 48(1)&nbsp;mnt
| β+
| 155Dy
| 5/2+
|
|
|-
| style="text-indent:1em" | 155mHo
| colspan="3" style="text-indent:2em" | 141,97(11)&nbsp;keV
| 880(80)&nbsp;µdtk
|
|
| 11/2−
|
|
|-
| 156Ho
| style="text-align:right" | 67
| style="text-align:right" | 89
| 155,92984(5)
| 56(1)&nbsp;mnt
| β+
| **<sup>156</sup>Dy**
| 4−
|
|
|-
| rowspan=2 style="text-indent:1em" | 156m1Ho
| rowspan=2 colspan="3" style="text-indent:2em" | 100(50)#&nbsp;keV
| rowspan=2|7,8(3)&nbsp;mnt
| β+
| **<sup>156</sup>Dy**
| rowspan=2|(9+)
| rowspan=2| 
| rowspan=2|
|-
| IT
| 156Ho
|-
| style="text-indent:1em" | 156m2Ho
| colspan="3" style="text-indent:2em" | 52,4(5)&nbsp;keV
| 9,5(15)&nbsp;dtk
|
|
| 1−
|
|
|-
| 157Ho
| style="text-align:right" | 67
| style="text-align:right" | 90
| 156,928256(26)
| 12,6(2)&nbsp;mnt
| β+
| 157Dy
| 7/2−
|
|
|-
| rowspan=2|158Ho
| rowspan=2 style="text-align:right" | 67
| rowspan=2 style="text-align:right" | 91
| rowspan=2|157,928941(29)
| rowspan=2|11,3(4)&nbsp;mnt
| β+ (93%)
| **<sup>158</sup>Dy**
| rowspan=2|5+
| rowspan=2|
| rowspan=2|
|-
| α (7%)
| 154Tb
|-
| rowspan=2 style="text-indent:1em" | 158m1Ho
| rowspan=2 colspan="3" style="text-indent:2em" | 67,200(10)&nbsp;keV
| rowspan=2|28(2)&nbsp;mnt
| IT (81%)
| 158Ho
| rowspan=2|2−
| rowspan=2|
| rowspan=2|
|-
| β+ (19%)
| **<sup>158</sup>Dy**
|-
| style="text-indent:1em" | 158m2Ho
| colspan="3" style="text-indent:2em" | 180(70)#&nbsp;keV
| 21,3(23)&nbsp;mnt
|
|
| (9+)
|
|
|-
| 159Ho
| style="text-align:right" | 67
| style="text-align:right" | 92
| 158,927712(4)
| 33,05(11)&nbsp;mnt
| β+
| 159Dy
| 7/2−
|
|
|-
| style="text-indent:1em" | 159mHo
| colspan="3" style="text-indent:2em" | 205,91(5)&nbsp;keV
| 8,30(8)&nbsp;dtk
| IT
| 159Ho
| 1/2+
|
|
|-
| 160Ho
| style="text-align:right" | 67
| style="text-align:right" | 93
| 159,928729(16)
| 25,6(3)&nbsp;mnt
| β+
| **<sup>160</sup>Dy**
| 5+
|
|
|-
| rowspan=2 style="text-indent:1em" | 160m1Ho
| rowspan=2 colspan="3" style="text-indent:2em" | 59,98(3)&nbsp;keV
| rowspan=2|5,02(5)&nbsp;jam
| IT (65%)
| 160Ho
| rowspan=2|2−
| rowspan=2|
| rowspan=2|
|-
| β+ (35%)
| **<sup>160</sup>Dy**
|-
| style="text-indent:1em" | 160m2Ho
| colspan="3" style="text-indent:2em" | 197(16)&nbsp;keV
| 3 dtk
|
|
| (9+)
|
|
|-
| 161Ho
| style="text-align:right" | 67
| style="text-align:right" | 94
| 160,927855(3)
| 2,48(5)&nbsp;jam
| EC
| **<sup>161</sup>Dy**
| 7/2−
|
|
|-
| style="text-indent:1em" | 161mHo
| colspan="3" style="text-indent:2em" | 211,16(3)&nbsp;keV
| 6,76(7)&nbsp;dtk
| IT
| 161Ho
| 1/2+
|
|
|-
| 162Ho
| style="text-align:right" | 67
| style="text-align:right" | 95
| 161,929096(4)
| 15,0(10)&nbsp;mnt
| β+
| **<sup>162</sup>Dy**
| 1+
|
|
|-
| rowspan=2 style="text-indent:1em" | 162mHo
| rowspan=2 colspan="3" style="text-indent:2em" | 106(7)&nbsp;keV
| rowspan=2|67,0(7)&nbsp;mnt
| IT (62%)
| 162Ho
| rowspan=2|6−
| rowspan=2|
| rowspan=2|
|-
| β+ (38%)
| **<sup>162</sup>Dy**
|-
| 163Ho
| style="text-align:right" | 67
| style="text-align:right" | 96
| 162,9287339(27)
| 4570(25)&nbsp;thn
| EC
| **<sup>163</sup>Dy**
| 7/2−
|
|
|-
| style="text-indent:1em" | 163mHo
| colspan="3" style="text-indent:2em" | 297,88(7)&nbsp;keV
| 1,09(3)&nbsp;dtk
| IT
| 163Ho
| 1/2+
|
|
|-
| rowspan=2|164Ho
| rowspan=2 style="text-align:right" | 67
| rowspan=2 style="text-align:right" | 97
| rowspan=2|163,9302335(30)
| rowspan=2|29(1)&nbsp;mnt
| EC (60%)
| **<sup>164</sup>Dy**
| rowspan=2|1+
| rowspan=2|
| rowspan=2|
|-
| β− (40%)
| 164Er
|-
| style="text-indent:1em" | 164mHo
| colspan="3" style="text-indent:2em" | 139,77(8)&nbsp;keV
| 38,0(10)&nbsp;mnt[37,5(+15−5)&nbsp;mnt]
| IT
| 164Ho
| 6−
|
|
|-
| 165Ho
| style="text-align:right" | 67
| style="text-align:right" | 98
| 164,9303221(27)
| colspan=3 align=center|**[[Stabil Secara Pengamatan]]**
| 7/2−
| 1,0000
|
|-
| 166Ho
| style="text-align:right" | 67
| style="text-align:right" | 99
| 165,9322842(27)
| 26,83(2)&nbsp;jam
| β−
| **<sup>166</sup>Er**
| 0−
|
|
|-
| style="text-indent:1em" | 166m1Ho
| colspan="3" style="text-indent:2em" | 5,985(18)&nbsp;keV
| 1200(180)&nbsp;thn
| β−
| **<sup>166</sup>Er**
| (7)−
|
|
|-
| style="text-indent:1em" | 166m2Ho
| colspan="3" style="text-indent:2em" | 190,9052(20)&nbsp;keV
| 185(15)&nbsp;µdtk
|
|
| 3+
|
|
|-
| 167Ho
| style="text-align:right" | 67
| style="text-align:right" | 100
| 166,933133(6)
| 3,003(18)&nbsp;jam
| β−
| **<sup>167</sup>Er**
| 7/2−
|
|
|-
| style="text-indent:1em" | 167mHo
| colspan="3" style="text-indent:2em" | 259,34(11)&nbsp;keV
| 6,0(10)&nbsp;µdtk
|
|
| 3/2+
|
|
|-
| 168Ho
| style="text-align:right" | 67
| style="text-align:right" | 101
| 167,93552(3)
| 2,99(7)&nbsp;mnt
| β−
| **<sup>168</sup>Er**
| 3+
|
|
|-
| rowspan=2 style="text-indent:1em" | 168m1Ho
| rowspan=2 colspan="3" style="text-indent:2em" | 59(1)&nbsp;keV
| rowspan=2|132(4)&nbsp;dtk
| IT (99,5%)
| 168Ho
| rowspan=2|(6+)
| rowspan=2|
| rowspan=2|
|-
| β− (0,5%)
| **<sup>168</sup>Er**
|-
| style="text-indent:1em" | 168m2Ho
| colspan="3" style="text-indent:2em" | 143,4(2)&nbsp;keV
| >4&nbsp;µdtk
|
|
| (1)−
|
|
|-
| style="text-indent:1em" | 168m3Ho
| colspan="3" style="text-indent:2em" | 192,6(2)&nbsp;keV
| 108(11)&nbsp;ndtk
|
|
| 1+
|
|
|-
| 169Ho
| style="text-align:right" | 67
| style="text-align:right" | 102
| 168,936872(22)
| 4,72(10)&nbsp;mnt
| β−
| 169Er
| 7/2−
|
|
|-
| 170Ho
| style="text-align:right" | 67
| style="text-align:right" | 103
| 169,93962(5)
| 2,76(5)&nbsp;mnt
| β−
| **<sup>170</sup>Er**
| 6+#
|
|
|-
| style="text-indent:1em" | 170mHo
| colspan="3" style="text-indent:2em" | 120(70)&nbsp;keV
| 43(2)&nbsp;dtk
| β−
| **<sup>170</sup>Er**
| (1+)
|
|
|-
| 171Ho
| style="text-align:right" | 67
| style="text-align:right" | 104
| 170,94147(64)
| 53(2)&nbsp;dtk
| β−
| 171Er
| 7/2−#
|
|
|-
| 172Ho
| style="text-align:right" | 67
| style="text-align:right" | 105
| 171,94482(43)#
| 25(3)&nbsp;dtk
| β−
| 172Er
|
|
|
|-
| 173Ho
| style="text-align:right" | 67
| style="text-align:right" | 106
| 172,94729(43)#
| 10# dtk
| β−
| 173Er
| 7/2−#
|
|
|-
| 174Ho
| style="text-align:right" | 67
| style="text-align:right" | 107
| 173,95115(54)#
| 8# dtk
|
|
|
|
|
|-
| 175Ho
| style="text-align:right" | 67
| style="text-align:right" | 108
| 174,95405(64)#
| 5# dtk
|
|
| 7/2−#
|
|

## Referensi

* Massa isotop dari:
**
* Komposisi isotop dan massa atom standar dari:
**
**
* Data waktu paruh, spin, dan isomer dipilih dari sumber-sumber berikut.
**
**
**