Изотопи на арсенот

Арсенот (33As) има 32 познати изотопи и најмалку 10 изомери. Само еден од овие изотопи, 75As, е стабилен. Како таков, тој се смета за моноизотопски елемент. Најдолговечниот радиоизотоп е 73As со време на полураспад од 80 дена.

## Список на изотопи

|-id=Арсен-64
| rowspan=2 |64As
| rowspan=2 style="text-align:right" | 33
| rowspan=2 style="text-align:right" | 31
| rowspan=2 |63,95756(22)#
| rowspan=2 |69,0(14)&nbsp;мс
| β<sup>+</sup>
| 64Ge
| rowspan=2 |0+#
| rowspan=2 |
|-
| β+, p?
| 63Ga
|-id=Арсен-65
| rowspan=2 |65As
| rowspan=2 style="text-align:right" | 33
| rowspan=2 style="text-align:right" | 32
| rowspan=2 |64,949611(91)
| rowspan=2 |130,3(6)&nbsp;мс
| β+
| 65Ge
| rowspan=2 |3/2−#
| rowspan=2 |
|-
| β+, p?
| 64Ga
|-id=Арсен-66
| 66As
| style="text-align:right" | 33
| style="text-align:right" | 33
| 65,9441488(61)
| 95,77(23)&nbsp;мс
| β+
| 66Ge
| 0+
|
|-id=Арсен-66m1
| style="text-indent:1em" | 66m1As
| colspan="3" style="text-indent:2em" | 1356,63(17)&nbsp;keV
| 1,14(4)&nbsp;μс
| IT
| 66As
| 5+
|
|-id=Арсен-66m2
| style="text-indent:1em" | 66m2As
| colspan="3" style="text-indent:2em" | 3023,(3)&nbsp;keV
| 7,98(26)&nbsp;μс
| IT
| 66As
| 9+
|
|-id=Арсен-67
| 67As
| style="text-align:right" | 33
| style="text-align:right" | 34
| 66,93925111(48)
| 42,5(12)&nbsp;с
| β+
| 67Ge
| (5/2−)
|
|-id=Арсен-68
| 68As
| style="text-align:right" | 33
| style="text-align:right" | 35
| 67,9367741(20)
| 151,6(8)&nbsp;с
| β+
| 68Ge
| 3+
|
|-id=Арсен-68m
| style="text-indent:1em" | 68mAs
| colspan="3" style="text-indent:2em" | 425,1(2)&nbsp;keV
| 111(20)&nbsp;нс
| IT
| 68As
| 1+
|
|-id=Арсен-69
| 69As
| style="text-align:right" | 33
| style="text-align:right" | 36
| 68,932246(34)
| 15,2(2)&nbsp;мин
| β+
| 69Ge
| 5/2−
|
|-id=Арсен-70
| 70As
| style="text-align:right" | 33
| style="text-align:right" | 37
| 69,9309346(15)
| 52,6(3)&nbsp;мин
| β+
| **<sup>70</sup>Ge**
| 4+
|
|-id=Арсен-70m
| style="text-indent:1em" | 70mAs
| colspan="3" style="text-indent:2em" | 32,046(23)&nbsp;keV
| 96(3)&nbsp;μс
| IT
| 70As
| 2+
|
|-id=Арсен-71
| 71As
| style="text-align:right" | 33
| style="text-align:right" | 38
| 70,9271136(45)
| 65,30(7)&nbsp;ч
| β+
| 71Ge
| 5/2−
|
|-id=Арсен-72
| 72As
| style="text-align:right" | 33
| style="text-align:right" | 39
| 71,9267523(44)
| 26,0(1)&nbsp;ч
| β+
| **<sup>72</sup>Ge**
| 2−
|
|-id=Арсен-73
| 73As
| style="text-align:right" | 33
| style="text-align:right" | 40
| 72,9238291(41)
| 80,30(6)&nbsp;д
| EC
| **<sup>73</sup>Ge**
| 3/2−
|
|-id=Арсен-73m
| style="text-indent:1em" | 73mAs
| colspan="3" style="text-indent:2em" | 427,902(21)&nbsp;keV
| 5,7(2)&nbsp;μс
| IT
| 73As
| 9/2+
|
|-id=Арсен-74
| rowspan=2|74As
| rowspan=2 style="text-align:right" | 33
| rowspan=2 style="text-align:right" | 41
| rowspan=2|73,9239286(18)
| rowspan=2|17,77(2)&nbsp;д
| β+ (66%)
| **<sup>74</sup>Ge**
| rowspan=2|2−
| rowspan=2|
|-
| β− (34%)
| **<sup>74</sup>Se**
|-id=Арсен-75
| 75As
| style="text-align:right" | 33
| style="text-align:right" | 42
| 74,92159456(95)
| colspan=3 align=center|**Стабилен**
| 3/2−
| 1,0000
|-id=Арсен-75m
| style="text-indent:1em" | 75mAs
| colspan="3" style="text-indent:2em" | 303,9243(8)&nbsp;keV
| 17,62(23)&nbsp;мс
| IT
| **<sup>75</sup>As**
| 9/2+
|
|-id=Арсен-76
| 76As
| style="text-align:right" | 33
| style="text-align:right" | 43
| 75,92239201(95)
| 1,0933(38)&nbsp;д
| β−
| **<sup>76</sup>Se**
| 2−
|
|-id=Арсен-76m
| style="text-indent:1em" | 76mAs
| colspan="3" style="text-indent:2em" | 44,425(1)&nbsp;keV
| 1,84(6)&nbsp;μс
| IT
| 76As
| (1)+
|
|-id=Арсен-77
| 77As
| style="text-align:right" | 33
| style="text-align:right" | 44
| 76,9206476(18)
| 38,79(5)&nbsp;ч
| β−
| **<sup>77</sup>Se**
| 3/2−
|
|-id=Арсен-77m
| style="text-indent:1em" | 77mAs
| colspan="3" style="text-indent:2em" | 475,48(4)&nbsp;keV
| 114,0(25)&nbsp;μс
| IT
| 77As
| 9/2+
|
|-id=Арсен-78
| 78As
| style="text-align:right" | 33
| style="text-align:right" | 45
| 77,921828(10)
| 90,7(2)&nbsp;мин
| β−
| **<sup>78</sup>Se**
| 2−
|
|-id=Арсен-79
| 79As
| style="text-align:right" | 33
| style="text-align:right" | 46
| 78,9209484(57)
| 9,01(15)&nbsp;мин
| β−
| 79Se
| 3/2−
|
|-id=Арсен-79m
| style="text-indent:1em" | 79mAs
| colspan="3" style="text-indent:2em" | 772,81(6)&nbsp;keV
| 1,21(1)&nbsp;μс
| IT
| 79As
| (9/2)+
|
|-id=Арсен-80
| 80As
| style="text-align:right" | 33
| style="text-align:right" | 47
| 79,9224744(36)
| 15,2(2)&nbsp;с
| β−
| **<sup>80</sup>Se**
| 1+
|
|-id=Арсен-81
| 81As
| style="text-align:right" | 33
| style="text-align:right" | 48
| 80,9221323(28)
| 33,3(8)&nbsp;с
| β−
| 81Se
| 3/2−
|
|-id=Арсен-82
| 82As
| style="text-align:right" | 33
| style="text-align:right" | 49
| 81,9247387(40)
| 19,1(5)&nbsp;с
| β−
| ***<sup>82</sup>Se***
| (2−)
|
|-id=Арсен-82m
| style="text-indent:1em" | 82mAs
| colspan="3" style="text-indent:2em" | 131,6(5)&nbsp;keV
| 13,6(4)&nbsp;с
| β−
| ***<sup>82</sup>Se***
| (5-)
|
|-id=Арсен-83
| 83As
| style="text-align:right" | 33
| style="text-align:right" | 50
| 82,9252069(30)
| 13,4(4)&nbsp;с
| β−
| 83Se
| 5/2−#
|
|-id=Арсен-84
| rowspan=2|84As
| rowspan=2 style="text-align:right" | 33
| rowspan=2 style="text-align:right" | 51
| rowspan=2|83,9293033(34)
| rowspan=2|3,16(58)&nbsp;с
| β− (99,72%)
| 84Se
| rowspan=2|(2−)
| rowspan=2|
|-
| β−, n (,28%)
| 83Se
|-id=Арсен-85
| rowspan=2|85As
| rowspan=2 style="text-align:right" | 33
| rowspan=2 style="text-align:right" | 52
| rowspan=2|84,9321637(33)
| rowspan=2|2,022(7)&nbsp;с
| β−, n (62,6%)
| 84Se
| rowspan=2|(5/2−)
| rowspan=2| 
|-
| β− (37,4%)
| 85Se
|-id=Арсен-86
| rowspan=3|86As
| rowspan=3 style="text-align:right" | 33
| rowspan=3 style="text-align:right" | 53
| rowspan=3|85,9367015(37)
| rowspan=3|945(8)&nbsp;мс
| β− (64,5%)
| 86Se
| rowspan=3|(1−,2−)
| rowspan=3|
|-
| β−, n (35,5%)
| 85Se
|-
| β−, 2n?
| 84Se
|-id=Арсен-87
| rowspan=3|87As
| rowspan=3 style="text-align:right" | 33
| rowspan=3 style="text-align:right" | 54
| rowspan=3|86,9402917(32)
| rowspan=3|492(25)&nbsp;мс
| β− (84,6%)
| 87Se
| rowspan=3|(5/2−,3/2−)
| rowspan=3|
|-
| β−, n (15,4%)
| 86Se
|-
| β−, 2n?
| 85Se
|-id=Арсен-88
| rowspan=2|88As
| rowspan=2 style="text-align:right" | 33
| rowspan=2 style="text-align:right" | 55
| rowspan=2|87,94584(22)#
| rowspan=2|270(150)&nbsp;мс
| β−
| 88Se
| rowspan=2|
| rowspan=2|
|-
| β−, n?
| 87Se
|-id=Арсен-89
| rowspan=3|89As
| rowspan=3 style="text-align:right" | 33
| rowspan=3 style="text-align:right" | 56
| rowspan=3|88,95005(32)#
| rowspan=3|220#&nbsp;мс [>150&nbsp;нс]
| β−?
| 89Se
| rowspan=3|5/2−#
| rowspan=3|
|-
| β−, n?
| 88Se
|-
| β−, 2n?
| 87Se
|-id=Арсен-90
| rowspan=3|90As
| rowspan=3 style="text-align:right" | 33
| rowspan=3 style="text-align:right" | 57
| rowspan=3|89,95600(43)#
| rowspan=3|70#&nbsp;мс [>300&nbsp;нс]
| β−?
| 90Se
| rowspan=3|
| rowspan=3|
|-
| β−, n?
| 89Se
|-
| β−, 2n?
| 88Se
|-id=Арсен-90m
| style="text-indent:1em" | 90mAs
| colspan="3" style="text-indent:2em" | 124,5(5)&nbsp;keV
| 220(100)&nbsp;нс
| IT
| 90As
| 
|
|-id=Арсен-91
| rowspan=3|91As
| rowspan=3 style="text-align:right" | 33
| rowspan=3 style="text-align:right" | 58
| rowspan=3|90,96082(43)#
| rowspan=3|100#&nbsp;мс [>300&nbsp;нс]
| β−?
| 91Se
| rowspan=3|5/2−#
| rowspan=3|
|-
| β−, n?
| 90Se
|-
| β−, 2n?
| 89Se
|-id=Арсен-92
| rowspan=3|92As
| rowspan=3 style="text-align:right" | 33
| rowspan=3 style="text-align:right" | 59
| rowspan=3|91,96739(54)#
| rowspan=3|45#&nbsp;мс [>300&nbsp;нс]
| β−?
| 92Se
| rowspan=3|
| rowspan=3|
|-
| β−, n?
| 91Se
|-
| β−, 2n?
| 90Se
|-id=Арсен-93
| 93As
| style="text-align:right" | 33
| style="text-align:right" | 60
| 
| 
| 
| 
|
|
|-id=Арсен-94
| 94As
| style="text-align:right" | 33
| style="text-align:right" | 61
| 
| 
| 
| 
|
|
|-id=Арсен-95
| 95As
| style="text-align:right" | 33
| style="text-align:right" | 62
| 
| 
| 
| 
|
|

## Наводи

* Isotope masses from:
**
* Half-life, spin, and isomer data selected from the following sources.
**
**
**
* A.Shore, A. Fritsch, M. Heim, A. Schuh, M. Thoennessen. *Discovery of the Arsenic Isotopes.* arXiv:0902.4361.

Арсен
Категорија:Арсен
Категорија:Изотопи на арсенот