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| Nuklida | Nama historis | Z> Energi eksitasi | N> Energi eksitasi | Massa isotop (Da) > Energi eksitasi | Waktu paruh | Modepeluruhan | Isotopanak | Spin dan paritas | Kelimpahanisotop |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 205Ac |  | 89 | 116 |  | 20(+97−9) mdtk | α | 201Fr |  |  |  |  |  |  |  |  |  |  |  |  |
| 206Ac |  | 89 | 117 | 206,01450(8) | 25(7) mdtk |  |  | (3+) |  |  |  |  |  |  |  |  |  |  |  |
| 206m1Ac |  | 80(50) keV | 80(50) keV | 80(50) keV | 15(6) mdtk |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 206m2Ac |  | 290(110)# keV | 290(110)# keV | 290(110)# keV | 41(16) mdtk |  |  | (10−) |  |  |  |  |  |  |  |  |  |  |  |
| 207Ac |  | 89 | 118 | 207,01195(6) | 31(8) mdtk [27(+11−6) mdtk] | α | 203Fr | 9/2−# |  |  |  |  |  |  |  |  |  |  |  |
| 208Ac |  | 89 | 119 | 208,01155(6) | 97(16) mdtk [95(+24−16) mdtk] | α (99%) | 204Fr | (3+) |  |  |  |  |  |  |  |  |  |  |  |
| 208Ac |  | 89 | 119 | 208,01155(6) | 97(16) mdtk [95(+24−16) mdtk] | β+ (1%) | 208Ra | (3+) |  |  |  |  |  |  |  |  |  |  |  |
| 208mAc |  | 506(26) keV | 506(26) keV | 506(26) keV | 28(7) mdtk [25(+9−5) mdtk] | α (89%) | 204Fr | (10−) |  |  |  |  |  |  |  |  |  |  |  |
| 208mAc |  | 506(26) keV | 506(26) keV | 506(26) keV | 28(7) mdtk [25(+9−5) mdtk] | IT (10%) | 208Ac | (10−) |  |  |  |  |  |  |  |  |  |  |  |
| 208mAc |  | 506(26) keV | 506(26) keV | 506(26) keV | 28(7) mdtk [25(+9−5) mdtk] | β+ (1%) | 208Ra | (10−) |  |  |  |  |  |  |  |  |  |  |  |
| 209Ac |  | 89 | 120 | 209,00949(5) | 92(11) mdtk | α (99%) | 205Fr | (9/2−) |  |  |  |  |  |  |  |  |  |  |  |
| 209Ac |  | 89 | 120 | 209,00949(5) | 92(11) mdtk | β+ (1%) | 209Ra | (9/2−) |  |  |  |  |  |  |  |  |  |  |  |
| 210Ac |  | 89 | 121 | 210,00944(6) | 350(40) mdtk | α (96%) | 206Fr | 7+# |  |  |  |  |  |  |  |  |  |  |  |
| 210Ac |  | 89 | 121 | 210,00944(6) | 350(40) mdtk | β+ (4%) | 210Ra | 7+# |  |  |  |  |  |  |  |  |  |  |  |
| 211Ac |  | 89 | 122 | 211,00773(8) | 213(25) mdtk | α (99,8%) | 207Fr | 9/2−# |  |  |  |  |  |  |  |  |  |  |  |
| 211Ac |  | 89 | 122 | 211,00773(8) | 213(25) mdtk | β+ (0,2%) | 211Ra | 9/2−# |  |  |  |  |  |  |  |  |  |  |  |
| 212Ac |  | 89 | 123 | 212,00781(7) | 920(50) mdtk | α (97%) | 208Fr | 6+# |  |  |  |  |  |  |  |  |  |  |  |
| 212Ac |  | 89 | 123 | 212,00781(7) | 920(50) mdtk | β+ (3%) | 212Ra | 6+# |  |  |  |  |  |  |  |  |  |  |  |
| 213Ac |  | 89 | 124 | 213,00661(6) | 731(17) mdtk | α | 209Fr | (9/2−)# |  |  |  |  |  |  |  |  |  |  |  |
| 213Ac |  | 89 | 124 | 213,00661(6) | 731(17) mdtk | β+ (langka) | 213Ra | (9/2−)# |  |  |  |  |  |  |  |  |  |  |  |
| 214Ac |  | 89 | 125 | 214,006902(24) | 8,2(2) dtk | α (89%) | 210Fr | (5+)# |  |  |  |  |  |  |  |  |  |  |  |
| 214Ac |  | 89 | 125 | 214,006902(24) | 8,2(2) dtk | β+ (11%) | 214Ra | (5+)# |  |  |  |  |  |  |  |  |  |  |  |
| 215Ac |  | 89 | 126 | 215,006454(23) | 0.17(1) dtk | α (99,91%) | 211Fr | 9/2− |  |  |  |  |  |  |  |  |  |  |  |
| 215Ac |  | 89 | 126 | 215,006454(23) | 0.17(1) dtk | β+ (0,09%) | 215Ra | 9/2− |  |  |  |  |  |  |  |  |  |  |  |
| 216Ac |  | 89 | 127 | 216,008720(29) | 0,440(16) mdtk | α | 212Fr | (1−) |  |  |  |  |  |  |  |  |  |  |  |
| 216Ac |  | 89 | 127 | 216,008720(29) | 0,440(16) mdtk | β+ (7×10−5%) | 216Ra | (1−) |  |  |  |  |  |  |  |  |  |  |  |
| 216mAc |  | 44(7) keV | 44(7) keV | 44(7) keV | 443(7) µdtk |  |  | (9−) |  |  |  |  |  |  |  |  |  |  |  |
| 217Ac |  | 89 | 128 | 217,009347(14) | 69(4) ndtk | α (98%) | 213Fr | 9/2− |  |  |  |  |  |  |  |  |  |  |  |
| 217Ac |  | 89 | 128 | 217,009347(14) | 69(4) ndtk | β+ (6,9×10−9%) | 217Ra | 9/2− |  |  |  |  |  |  |  |  |  |  |  |
| 217mAc |  | 2012(20) keV | 2012(20) keV | 2012(20) keV | 740(40) ndtk |  |  | (29/2)+ |  |  |  |  |  |  |  |  |  |  |  |
| 218Ac |  | 89 | 129 | 218,01164(5) | 1,08(9) µdtk | α | 214Fr | (1−)# |  |  |  |  |  |  |  |  |  |  |  |
| 218mAc |  | 584(50)# keV | 584(50)# keV | 584(50)# keV | 103(11) ndtk |  |  | (11+) |  |  |  |  |  |  |  |  |  |  |  |
| 219Ac |  | 89 | 130 | 219,01242(5) | 11,8(15) µdtk | α | 215Fr | 9/2− |  |  |  |  |  |  |  |  |  |  |  |
| 219Ac |  | 89 | 130 | 219,01242(5) | 11,8(15) µdtk | β+ (10−6%) | 219Ra | 9/2− |  |  |  |  |  |  |  |  |  |  |  |
| 220Ac |  | 89 | 131 | 220,014763(16) | 26,36(19) mdtk | α | 216Fr | (3−) |  |  |  |  |  |  |  |  |  |  |  |
| 220Ac |  | 89 | 131 | 220,014763(16) | 26,36(19) mdtk | β+ (5×10−4%) | 220Ra | (3−) |  |  |  |  |  |  |  |  |  |  |  |
| 221Ac |  | 89 | 132 | 221,01559(5) | 52(2) mdtk | α | 217Fr | 9/2−# |  |  |  |  |  |  |  |  |  |  |  |
| 222Ac |  | 89 | 133 | 222,017844(6) | 5,0(5) dtk | α (99%) | 218Fr | 1− |  |  |  |  |  |  |  |  |  |  |  |
| 222Ac |  | 89 | 133 | 222,017844(6) | 5,0(5) dtk | β+ (1%) | 222Ra | 1− |  |  |  |  |  |  |  |  |  |  |  |
| 222mAc |  | 200(150)# keV | 200(150)# keV | 200(150)# keV | 1,05(7) mnt | α (88,6%) | 218Fr | tinggi |  |  |  |  |  |  |  |  |  |  |  |
| 222mAc |  | 200(150)# keV | 200(150)# keV | 200(150)# keV | 1,05(7) mnt | IT (10%) | 222Ac | tinggi |  |  |  |  |  |  |  |  |  |  |  |
| 222mAc |  | 200(150)# keV | 200(150)# keV | 200(150)# keV | 1,05(7) mnt | β+ (1,4%) | 222Ra | tinggi |  |  |  |  |  |  |  |  |  |  |  |
| 223Ac |  | 89 | 134 | 223,019137(8) | 2,10(5) mnt | α (99%) | 219Fr | (5/2−) |  |  |  |  |  |  |  |  |  |  |  |
| 223Ac |  | 89 | 134 | 223,019137(8) | 2,10(5) mnt | EC (1%) | 223Ra | (5/2−) |  |  |  |  |  |  |  |  |  |  |  |
| 223Ac |  | 89 | 134 | 223,019137(8) | 2,10(5) mnt | CD (3,2×10−9%) | 209Bi 14C | (5/2−) |  |  |  |  |  |  |  |  |  |  |  |
| 224Ac |  | 89 | 135 | 224,021723(4) | 2,78(17) jam | β+ (90,9%) | 224Ra | 0− |  |  |  |  |  |  |  |  |  |  |  |
| 224Ac |  | 89 | 135 | 224,021723(4) | 2,78(17) jam | α (9,1%) | 220Fr | 0− |  |  |  |  |  |  |  |  |  |  |  |
| 224Ac |  | 89 | 135 | 224,021723(4) | 2,78(17) jam | β− (1,6%) | 224Th | 0− |  |  |  |  |  |  |  |  |  |  |  |
| 225Ac |  | 89 | 136 | 225,023230(5) | 10,0(1) hri | α | 221Fr | (3/2−) | Renik |  |  |  |  |  |  |  |  |  |  |
| 225Ac |  | 89 | 136 | 225,023230(5) | 10,0(1) hri | CD (6×10−10%) | 211Bi 14C | (3/2−) | Renik |  |  |  |  |  |  |  |  |  |  |
| 226Ac |  | 89 | 137 | 226,026098(4) | 29,37(12) jam | β− (83%) | 226Th | (1)(−#) |  |  |  |  |  |  |  |  |  |  |  |
| 226Ac |  | 89 | 137 | 226,026098(4) | 29,37(12) jam | EC (17%) | 226Ra | (1)(−#) |  |  |  |  |  |  |  |  |  |  |  |
| 226Ac |  | 89 | 137 | 226,026098(4) | 29,37(12) jam | α (0,006%) | 222Fr | (1)(−#) |  |  |  |  |  |  |  |  |  |  |  |
| 227Ac | Aktinium | 89 | 138 | 227,0277521(26) | 21,772(3) thn | β− (98,61%) | 227Th | 3/2− | Renik |  |  |  |  |  |  |  |  |  |  |
| 227Ac | Aktinium | 89 | 138 | 227,0277521(26) | 21,772(3) thn | α (1,38%) | 223Fr | 3/2− | Renik |  |  |  |  |  |  |  |  |  |  |
| 228Ac | Mesotorium 2 | 89 | 139 | 228,0310211(27) | 6,13(2) jam | β− | 228Th | 3+ | Renik |  |  |  |  |  |  |  |  |  |  |
| 228Ac | Mesotorium 2 | 89 | 139 | 228,0310211(27) | 6,13(2) jam | α (5,5×10−6%) | 224Fr | 3+ | Renik |  |  |  |  |  |  |  |  |  |  |
| 229Ac |  | 89 | 140 | 229,03302(4) | 62,7(5) mnt | β− | 229Th | (3/2+) |  |  |  |  |  |  |  |  |  |  |  |
| 230Ac |  | 89 | 141 | 230,03629(32) | 122(3) dtk | β− | 230Th | (1+) |  |  |  |  |  |  |  |  |  |  |  |
| 231Ac |  | 89 | 142 | 231,03856(11) | 7,5(1) mnt | β− | 231Th | (1/2+) |  |  |  |  |  |  |  |  |  |  |  |
| 232Ac |  | 89 | 143 | 232,04203(11) | 119(5) dtk | β− | 232Th | (1+) |  |  |  |  |  |  |  |  |  |  |  |
| 233Ac |  | 89 | 144 | 233,04455(32)# | 145(10) dtk | β− | 233Th | (1/2+) |  |  |  |  |  |  |  |  |  |  |  |
| 234Ac |  | 89 | 145 | 234,04842(43)# | 44(7) dtk | β− | 234Th |  |  |  |  |  |  |  |  |  |  |  |  |
| 235Ac |  | 89 | 146 | 235,05123(38)# | 60(4) dtk | β− | 235Th | 1/2+# |  |  |  |  |  |  |  |  |  |  |  |
| 236Ac |  | 89 | 147 | 236,05530(54)# | 72(+345-33) dtk | β− | 236Th |  |  |  |  |  |  |  |  |  |  |  |  |
Header & footer tabel ini:  view 
↑  mAc –  Isomer nuklir tereksitasi.
↑  ( ) –  Ketidakpastian (1σ) diberikan dalam bentuk ringkas dalam tanda kurung setelah digit terakhir yang sesuai.
↑  # –  Massa atom bertanda #: nilai dan ketidakpastian yang diperoleh bukan dari data eksperimen murni, tetapi setidaknya sebagian dari tren dari Permukaan Massa (trends from the Mass Surface, TMS).
↑  
Mode peluruhan:


CD:Peluruhan gugus

EC:Penangkapan elektron

IT:Transisi isomerik
↑  Simbol miring tebal sebagai anak –  Produk anak hampir stabil.
↑  ( ) nilai spin –  Menunjukkan spin dengan argumen penempatan yang lemah.
1 2  # –  Nilai yang ditandai # tidak murni berasal dari data eksperimen, tetapi setidaknya sebagian dari tren nuklida tetangga (trends of neighboring nuclides, TNN).
↑  Memiliki kegunaan medis
↑  Produk peluruhan antara dari 237Np
↑  Asal nama unsur ini
↑  Produk peluruhan antara dari 235U
↑  Produk peluruhan antara dari 232Th