| Proton | Neutron | Nuclear Spin | Energy State | |
|---|---|---|---|---|
| 240Es | 99 | 141 | -1 | |
| 241Es | 99 | 142 | -3/2 | |
| 242Es | 99 | 143 | -2 | |
| 243Es | 99 | 144 | -3/2 | |
| 245Es | 99 | 146 | -3/2 | |
| 246Es | 99 | 147 | -4 | |
| 247Es | 99 | 148 | 7/2 | |
| 248Es | 99 | 149 | -2 | |
| 249Es | 99 | 150 | 7/2 | |
| 250Es | 99 | 151 | 6 | |
| 250mEs | 99 | 151 | -1 | |
| 251Es | 99 | 152 | -3/2 | |
| 252Es | 99 | 153 | -5 | |
| 253Es | 99 | 154 | 7/2 | |
| 254mEs | 99 | 155 | 2 | |
| 254Es | 99 | 155 | 7 | |
| 255Es | 99 | 156 | 7/2 | |
| 256Es | 99 | 157 | 1 | |
| 257Es | 99 | 158 | 7/2 | |
| 258Es | 99 | 159 | 2 |