Berkelyum izotopları
İzotoplar

| Nüklit | Z | N | İzotop kütlesi (Da) | Yarı ömür | Bozunma türü | Yavru izotop | Spin ve parite |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 233Bk | 97 | 136 |  | 21 s | α | 229Am |  |
| 234Bk | 97 | 137 |  | 19(+6-4) s | α (%50) | 230Am |  |
| 234Bk | 97 | 137 |  | 19(+6-4) s | β+ (%50) | 234Cm |  |
| 236Bk | 97 | 139 | 236,05733(43)# | 22(+13-6) s | α | 232Am |  |
| 236Bk | 97 | 139 | 236,05733(43)# | 22(+13-6) s | β+ | 236Cm  |  |
| 238Bk | 97 | 141 | 238,05828(31)# | 2,40(8) dk | α | 234Am |  |
| 238Bk | 97 | 141 | 238,05828(31)# | 2,40(8) dk | β+, KF (%0,048) | (çeşitli) |  |
| 238Bk | 97 | 141 | 238,05828(31)# | 2,40(8) dk | β+ (nadir) | 238Cm  |  |
| 240Bk | 97 | 143 | 240,05976(16)# | 4,8(8) dk | β+ (%90) | 240Cm |  |
| 240Bk | 97 | 143 | 240,05976(16)# | 4,8(8) dk | α (%10) | 236Am |  |
| 240Bk | 97 | 143 | 240,05976(16)# | 4,8(8) dk | β+, KF (%0,002) | (çeşitli) |  |
| 241Bk | 97 | 144 | 241,06023(22)# | 4,6(4) dk | α | 237Am | (7/2+) |
| 241Bk | 97 | 144 | 241,06023(22)# | 4,6(4) dk | β+ (nadir) | 241Cm | (7/2+) |
| 242Bk | 97 | 145 | 242,06198(22)# | 7,0(13) dk | β+ (%99,99) | 242Cm | 2-# |
| 242Bk | 97 | 145 | 242,06198(22)# | 7,0(13) dk | β+, KF (%3×10−4) | (çeşitli) | 2-# |
| 242mBk | 200(200)# keV | 200(200)# keV | 200(200)# keV | 600(100) ns | KF | (çeşitli) |  |
| 243Bk | 97 | 146 | 243,063008(5) | 4,5(2) h | β+ (%99,85) | 243Cm | (3/2-) |
| 243Bk | 97 | 146 | 243,063008(5) | 4,5(2) h | α (%0,15) | 239Am | (3/2-) |
| 244Bk | 97 | 147 | 244,065181(16) | 4,35(15) h | β+ (%99,99) | 244Cm | (4-)# |
| 244Bk | 97 | 147 | 244,065181(16) | 4,35(15) h | α (%0,006) | 240Am | (4-)# |
| 245Bk | 97 | 148 | 245,0663616(25) | 4,94(3) g | EY (%99,88) | 245Cm | 3/2- |
| 245Bk | 97 | 148 | 245,0663616(25) | 4,94(3) g | α (%0,12) | 241Am | 3/2- |
| 246Bk | 97 | 149 | 246,06867(6) | 1,80(2) g | β+ (%99,8) | 246Cm | 2(-) |
| 246Bk | 97 | 149 | 246,06867(6) | 1,80(2) g | α (%0,2) | 242Am | 2(-) |
| 247Bk | 97 | 150 | 247,070307(6) | 1,38(25)×103 y | α | 243Am | (3/2-) |
| 247Bk | 97 | 150 | 247,070307(6) | 1,38(25)×103 y | KF (nadir) | (çeşitli) | (3/2-) |
| 248Bk | 97 | 151 | 248,07309(8)# | >300 y | α | 244Am | 6+# |
| 248mBk | 30(70)# keV | 30(70)# keV | 30(70)# keV | 23,7(2) h | β- | 248Cf | 1(-) |
| 249Bk | 97 | 152 | 249,0749867(28) | 330(4) g | β- | 249Cf | 7/2+ |
| 249Bk | 97 | 152 | 249,0749867(28) | 330(4) g | α (%0,00145) | 245Am | 7/2+ |
| 249Bk | 97 | 152 | 249,0749867(28) | 330(4) g | KF (%4,7×10−8) | (çeşitli) | 7/2+ |
| 249mBk | 8,80(10) keV | 8,80(10) keV | 8,80(10) keV | 300 µs | IT | 249Bk | (3/2-) |
| 250Bk | 97 | 153 | 250,078317(4) | 3,212(5) h | β- | 250Cf | 2- |
| 250m1Bk | 35,59(5) keV | 35,59(5) keV | 35,59(5) keV | 29(1) µs | IT | 250Bk | (4+) |
| 250m2Bk | 84,1(21) keV | 84,1(21) keV | 84,1(21) keV | 213(8) µs |  |  | (7+) |
| 251Bk | 97 | 154 | 251,080760(12) | 55,6(11) dk | β- | 251Cf | (3/2-)# |
| 251Bk | 97 | 154 | 251,080760(12) | 55,6(11) dk | α (%10−5) | 247Am | (3/2-)# |
| 251mBk | 35,5(13) keV | 35,5(13) keV | 35,5(13) keV | 58(4) µs | IT | 251Bk | (7/2+)# |
| 252Bk | 97 | 155 | 252,08431(22)# | 1,8(5) dk | β- | 252Cf |  |
| 252Bk | 97 | 155 | 252,08431(22)# | 1,8(5) dk | α | 248Am |  |
| 253Bk | 97 | 156 | 253,08688(39)# | 10# dk | β- | 253Cf |  |