{| border="1" cellspacing="0" cellpadding="2" width="100%"
! [[Isotop|Isotop]]
! [[Natürliche Häufigkeit|NH]]
! [[Halbwertszeit|t<sub>1/2</sub>]]
! [[Radioaktivität|ZM]]
! [[Zerfallsenergie|ZE]] [[mega|M]][[Elektronenvolt|eV]]
! [[Zerfallsprodukt|ZP]]
|-----
| rowspan="2" | <sup>250</sup>Es
| rowspan="2" | {syn.}
| rowspan="2" | 8.6 h
| [[Elektronen-Einfang|e]]
| 2,100
| [[Californium|<sup>250</sup>Cf]]
|-----
| [[Alphastrahlung|a]]
| 6,880
| [[Berkelium|<sup>246</sup>Bk]]
|-----
| rowspan="2" | <sup>251</sup>Es
| rowspan="2" | {syn.}
| rowspan="2" | 33 h
| [[Elektronen-Einfang|e]]
| 0,367
| [[Californium|<sup>251</sup>Cf]]
|-----
| [[Alphastrahlung|a]]
| 6,597
| [[Berkelium|<sup>247</sup>Bk]]
|-----
| rowspan="2" | <sup>252</sup>Es
| rowspan="2" | {syn.}
| rowspan="2" | 471,7 d
| [[Alphastrahlung|a]]
| 6,760
| [[Berkelium|<sup>248</sup>Bk]]
|-----
| [[Elektronen-Einfang|e]]
| 1,260
| [[Californium|<sup>252</sup>Cf]]
|-----
| <sup>253</sup>Es
| [[Synthetisches Radioisotop|{syn.}]]
| 20,47 d
| [[Alphastrahlung|a]]
| 6,739
| [[Berkelium|<sup>249</sup>Bk]]
|-----
| <sup>254</sup>Es
| [[Synthetisches Radioisotop|{syn.}]]
| 275,7 d
| [[Alphastrahlung|a]]
| 6,618
| [[Berkelium|<sup>250</sup>Bk]]
|-----
| rowspan="2" | <sup>255</sup>Es
| rowspan="2" | {syn.}
| rowspan="2" | 39,8 d
| [[Betastrahlung|ß<sup>-</sup>]]
| 0,288
| [[Fermium|<sup>255</sup>Fm]]
|-----
| [[Alphastrahlung|a]]
| 6,436
| [[Berkelium|<sup>251</sup>Bk]]

|}