| Proton | Neutron | Nuclear Spin | Energy State | |
|---|---|---|---|---|
| 69Kr | 36 | 33 | -5/2 | |
| 70Kr | 36 | 34 | 0 | |
| 71Kr | 36 | 35 | -5/2 | |
| 72Kr | 36 | 36 | 0 | |
| 73Kr | 36 | 37 | -3/2 | |
| 73mKr | 36 | 37 | 9/2 | |
| 74Kr | 36 | 38 | 0 | |
| 75Kr | 36 | 39 | 5/2 | |
| 76Kr | 36 | 40 | 0 | |
| 77Kr | 36 | 41 | 5/2 | |
| 78Kr | 36 | 42 | 0 | Stable |
| 79mKr | 36 | 43 | 7/2 | |
| 79Kr | 36 | 43 | -1/2 | |
| 80Kr | 36 | 44 | 0 | Stable |
| 81Kr | 36 | 45 | 7/2 | |
| 81mKr | 36 | 45 | -1/2 | |
| 82Kr | 36 | 46 | 0 | Stable |
| 83Kr | 36 | 47 | 9/2 | Stable |
| 84mKr | 36 | 48 | 8 | |
| 84Kr | 36 | 48 | 0 | Stable |
| 85m1Kr | 36 | 49 | -1/2 | |
| 85Kr | 36 | 49 | 9/2 | |
| 85m2Kr | 36 | 49 | 17/2 | |
| 86Kr | 36 | 50 | 0 | Stable |
| 87Kr | 36 | 51 | 5/2 | |
| 88Kr | 36 | 52 | 0 | |
| 89Kr | 36 | 53 | 3/2 | |
| 90Kr | 36 | 54 | 0 | |
| 91Kr | 36 | 55 | 5/2 | |
| 92Kr | 36 | 56 | 0 | |
| 93Kr | 36 | 57 | 1/2 | |
| 94Kr | 36 | 58 | 0 | |
| 95Kr | 36 | 59 | 1/2 | |
| 96Kr | 36 | 60 | 0 | |
| 97Kr | 36 | 61 | 3/2 | |
| 98Kr | 36 | 62 | 0 | |
| 99Kr | 36 | 63 | 3/2 | |
| 100Kr | 36 | 64 | 0 | |
| 101Kr | 36 | 65 | 1/2 |