| İzotop | Kütlesi | Yarı ömrü | Bozunma Şekli | Dönüştüğü İzotop | Nükleer
Spin |
| 65As | 64,949 | 0,021 sn. | e- yakalama | 65Ge | |
| 66As | 65,944 | 0,125 sn. | e- yakalama | 66Ge | |
| 67As | 66,939 | 0,187 sn. | e- yakalama | 67Ge | 5/2- |
| 68As | 67,937 | 1,178 sn. | e- yakalama | 68Ge | 3+ |
| 69As | 68,9323 | 2,572 sn. | e- yakalama | 69Ge | 5/2- |
| 70As | 69,9309 | 87,32 gün | e- yakalama | 70Ge | 4+ |
| 71As | 70,9271 | 5,05 dk. | e- yakalama | 71Ge | 5/2- |
| 72As | 71,9268 | 170,3 dk. | e- yakalama | 72Ge | 2- |
| 73As | 72,9238 | 11,5 sn. | e- yakalama | 73Ge | 3/2- |
| 74As | 73,9239 | 8,8 sn. | e- yakalama | 74Ge | 2- |
 - |
74Se | ||||
| 76As | 75,9224 | 0,56 sn. | -
|
76Se | 2- |
| 77As | 76,9207 | 0,220 sn. | -
|
77Se | 3/2- |
| 78As | 77,9218 | 0,123 sn. | -
|
78Se | 2- |
| 79As | 78,921 | 0,082 sn. | - |
79Se | 3/2- |
| 80As | 79,9226 | 0,082 sn. | -
|
80Se | 1+ |
| 81As | 80,9221 | 0,082 sn. | -
|
81Se | 3/2- |
| 82As | 81,925 | 0,082 sn. | -
|
82Se | 1+ |
| 83As | 82,925 | 0,082 sn. | -
|
83Se | 2-, 3/2- |
| 84As | 83,929 | 0,082 sn. | -
+ n0 |
83Se | 3- |
| - |
84Se | ||||
| 85As | 84,932 | 0,082 sn. | -
+ n0 |
84Se | 3/2- |
| - |
85Se | ||||
| 86As | 85,936 | 0,082 sn. | -
+ n0 |
85Se | |
| - |
86Se | ||||
| 87As | 86,94 | 0,082 sn. | -
+ n0 |
86Se | 3/2- |
| - |
87Se |