| Proton | Neutron | Nuclear Spin | Energy State | |
|---|---|---|---|---|
| 87Ru | 44 | 43 | -1/2 | |
| 88Ru | 44 | 44 | 0 | |
| 89Ru | 44 | 45 | 7/2 | |
| 90Ru | 44 | 46 | 0 | |
| 91mRu | 44 | 47 | -1/2 | |
| 91Ru | 44 | 47 | 9/2 | |
| 92Ru | 44 | 48 | 0 | |
| 93Ru | 44 | 49 | 9/2 | |
| 93m1Ru | 44 | 49 | -1/2 | |
| 93m2Ru | 44 | 49 | 21/2 | |
| 94mRu | 44 | 50 | 8 | |
| 94Ru | 44 | 50 | 0 | |
| 95Ru | 44 | 51 | 5/2 | |
| 96Ru | 44 | 52 | 0 | Stable |
| 97Ru | 44 | 53 | 5/2 | |
| 98Ru | 44 | 54 | 0 | Stable |
| 99Ru | 44 | 55 | 5/2 | Stable |
| 100Ru | 44 | 56 | 0 | Stable |
| 101mRu | 44 | 57 | -11/2 | |
| 101Ru | 44 | 57 | 5/2 | Stable |
| 102Ru | 44 | 58 | 0 | Stable |
| 103Ru | 44 | 59 | 3/2 | |
| 103mRu | 44 | 59 | -11/2 | |
| 104Ru | 44 | 60 | 0 | Stable |
| 105Ru | 44 | 61 | 3/2 | |
| 106Ru | 44 | 62 | 0 | |
| 107Ru | 44 | 63 | 5/2 | |
| 108Ru | 44 | 64 | 0 | |
| 109Ru | 44 | 65 | 5/2 | |
| 110Ru | 44 | 66 | 0 | |
| 111Ru | 44 | 67 | 5/2 | |
| 112Ru | 44 | 68 | 0 | |
| 113mRu | 44 | 69 | -11/2 | |
| 113Ru | 44 | 69 | 5/2 | |
| 114Ru | 44 | 70 | 0 | |
| 115Ru | 44 | 71 | -1/2 | |
| 116Ru | 44 | 72 | 0 | |
| 117Ru | 44 | 73 | 1/2 | |
| 118Ru | 44 | 74 | 0 | |
| 119Ru | 44 | 75 | -1/2 | |
| 120Ru | 44 | 76 | 0 |