Table
| nuclide symbol |
historic name |
Z(p) | N(n) | isotopic mass (u) |
half-life | decay mode(s) |
daughter isotope(s) |
nuclear spin |
representative isotopic composition (mole fraction) |
range of natural variation (mole fraction) |
|---|---|---|---|---|---|---|---|---|---|---|
| excitation energy | ||||||||||
| 206Ac | 89 | 117 | 206.01450(8) | 25(7) ms | (3+) | |||||
| 206m1Ac | 80(50) keV | 15(6) ms | ||||||||
| 206m2Ac | 290(110)# keV | 41(16) ms | (10-) | |||||||
| 207Ac | 89 | 118 | 207.01195(6) | 31(8) ms |
α | 203Fr | 9/2-# | |||
| 208Ac | 89 | 119 | 208.01155(6) | 97(16) ms |
α (99%) | 204Fr | (3+) | |||
| β+ (1%) | 208Ra | |||||||||
| 208mAc | 506(26) keV | 28(7) ms |
α (89%) | 204Fr | (10-) | |||||
| IT (10%) | 208Ac | |||||||||
| β+ (1%) | 208Ra | |||||||||
| 209Ac | 89 | 120 | 209.00949(5) | 92(11) ms | α (99%) | 205Fr | (9/2-) | |||
| β+ (1%) | 209Ra | |||||||||
| 210Ac | 89 | 121 | 210.00944(6) | 350(40) ms | α (96%) | 206Fr | 7+# | |||
| β+ (4%) | 210Ra | |||||||||
| 211Ac | 89 | 122 | 211.00773(8) | 213(25) ms | α (99.8%) | 207Fr | 9/2-# | |||
| β+ (.2%) | 211Ra | |||||||||
| 212Ac | 89 | 123 | 212.00781(7) | 920(50) ms | α (97%) | 208Fr | 6+# | |||
| β+ (3%) | 212Ra | |||||||||
| 213Ac | 89 | 124 | 213.00661(6) | 731(17) ms | α | 209Fr | (9/2-)# | |||
| β+ (rare) | 213Ra | |||||||||
| 214Ac | 89 | 125 | 214.006902(24) | 8.2(2) s | α (89%) | 210Fr | (5+)# | |||
| β+ (11%) | 214Ra | |||||||||
| 215Ac | 89 | 126 | 215.006454(23) | 0.17(1) s | α (99.91%) | 211Fr | 9/2- | |||
| β+ (.09%) | 215Ra | |||||||||
| 216Ac | 89 | 127 | 216.008720(29) | 0.440(16) ms | α | 212Fr | (1-) | |||
| β+ (7×10−5%) | 216Ra | |||||||||
| 216mAc | 44(7) keV | 443(7) µs | (9-) | |||||||
| 217Ac | 89 | 128 | 217.009347(14) | 69(4) ns | α (98%) | 213Fr | 9/2- | |||
| β+ (2%) | 217Ra | |||||||||
| 217mAc | 2012(20) keV | 740(40) ns | (29/2)+ | |||||||
| 218Ac | 89 | 129 | 218.01164(5) | 1.08(9) µs | α | 214Fr | (1-)# | |||
| 218mAc | 584(50)# keV | 103(11) ns | (11+) | |||||||
| 219Ac | 89 | 130 | 219.01242(5) | 11.8(15) µs | α | 215Fr | 9/2- | |||
| β+ (10−6%) | 219Ra | |||||||||
| 220Ac | 89 | 131 | 220.014763(16) | 26.36(19) ms | α | 216Fr | (3-) | |||
| β+ (5×10−4%) | 220Ra | |||||||||
| 221Ac | 89 | 132 | 221.01559(5) | 52(2) ms | α | 217Fr | 9/2-# | |||
| 222Ac | 89 | 133 | 222.017844(6) | 5.0(5) s | α (99%) | 218Fr | 1- | |||
| β+ (1%) | 222Ra | |||||||||
| 222mAc | 200(150)# keV | 1.05(7) min | α (88.6%) | 218Fr | high | |||||
| IT (10%) | 222Ac | |||||||||
| β+ (1.4%) | 222Ra | |||||||||
| 223Ac | 89 | 134 | 223.019137(8) | 2.10(5) min | α (99%) | 219Fr | (5/2-) | |||
| EC (1%) | 223Ra | |||||||||
| CD (3.2×10−9%) | 209Bi 14C |
|||||||||
| 224Ac | 89 | 135 | 224.021723(4) | 2.78(17) h | β+ (90.9%) | 224Ra | 0- | |||
| α (9.1%) | 220Fr | |||||||||
| β- (1.6%) | 224Th | |||||||||
| 225Ac | 89 | 136 | 225.023230(5) | 10.0(1) d | α | 221Fr | (3/2-) | |||
| CD (6×10−10%) | 211Bi 14C |
|||||||||
| 226Ac | 89 | 137 | 226.026098(4) | 29.37(12) h | β- (83%) | 226Th | (1)(-#) | |||
| EC (17%) | 226Ra | |||||||||
| α (.006%) | 222Fr | |||||||||
| 227Ac | Actinium | 89 | 138 | 227.0277521(26) | 21.772(3) a | β- (98.61%) | 227Th | 3/2- | Trace | |
| α (1.38%) | 223Fr | |||||||||
| 228Ac | Mesothorium 2 | 89 | 139 | 228.0310211(27) | 6.15(2) h | β- | 228Th | 3+ | Trace | |
| α (5.5×10−6%) | 224Fr | |||||||||
| 229Ac | 89 | 140 | 229.03302(4) | 62.7(5) min | β- | 229Th | (3/2+) | |||
| 230Ac | 89 | 141 | 230.03629(32) | 122(3) s | β- | 230Th | (1+) | |||
| 231Ac | 89 | 142 | 231.03856(11) | 7.5(1) min | β- | 231Th | (1/2+) | |||
| 232Ac | 89 | 143 | 232.04203(11) | 119(5) s | β- | 232Th | (1+) | |||
| 233Ac | 89 | 144 | 233.04455(32)# | 145(10) s | β- | 233Th | (1/2+) | |||
| 234Ac | 89 | 145 | 234.04842(43)# | 44(7) s | β- | 234Th | ||||
| 235Ac | 89 | 146 | 235.05123(38)# | 40# s | β- | 235Th | 1/2+# | |||
| 236Ac | 89 | 147 | 236.05530(54)# | 2# min | β- | 236Th | ||||
Read more about this topic: Isotopes Of Actinium
Famous quotes containing the word table:
“The salt person and blasted place
I furnish with the meat of a fable;
If the dead starve, their stomachs turn to tumble
An upright man in the antipodes
Or spray-based and rock-chested sea:
Over the past table I repeat this present grace.”
—Dylan Thomas (1914–1953)
“The one happiness is to shut one’s door upon a little room, with a table before one, and to create; to create life in that isolation from life.”
—Eleonora Duse (1859–1924)
“Remember thee?
Ay, thou poor ghost, whiles memory holds a seat
In this distracted globe. Remember thee?
Yea, from the table of my memory
I’ll wipe away all trivial fond records,
All saws of books, all forms, all pressures past
That youth and observation copied there,
And thy commandment all alone shall live
Within the book and volume of my brain,”
—William Shakespeare (1564–1616)