Table
| nuclide symbol |
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 | |||||||||
| 155Ta | 73 | 82 | 154.97459(54)# | 13(4) µs |
(11/2−) | ||||
| 156Ta | 73 | 83 | 155.97230(43)# | 144(24) ms | β+ (95.8%) | 156Hf | (2−) | ||
| p (4.2%) | 155Hf | ||||||||
| 156mTa | 102(7) keV | 0.36(4) s | p | 155Hf | 9+ | ||||
| 157Ta | 73 | 84 | 156.96819(22) | 10.1(4) ms | α (91%) | 153Lu | 1/2+ | ||
| β+ (9%) | 157Hf | ||||||||
| 157m1Ta | 22(5) keV | 4.3(1) ms | 11/2− | ||||||
| 157m2Ta | 1593(9) keV | 1.7(1) ms | α | 153Lu | (25/2−) | ||||
| 158Ta | 73 | 85 | 157.96670(22)# | 49(8) ms | α (96%) | 154Lu | (2−) | ||
| β+ (4%) | 158Hf | ||||||||
| 158mTa | 141(9) keV | 36.0(8) ms | α (93%) | 154Lu | (9+) | ||||
| IT | 158Ta | ||||||||
| β+ | 158Hf | ||||||||
| 159Ta | 73 | 86 | 158.963018(22) | 1.04(9) s | β+ (66%) | 159Hf | (1/2+) | ||
| α (34%) | 155Lu | ||||||||
| 159mTa | 64(5) keV | 514(9) ms | α (56%) | 155Lu | (11/2−) | ||||
| β+ (44%) | 159Hf | ||||||||
| 160Ta | 73 | 87 | 159.96149(10) | 1.70(20) s | α | 156Lu | (2#)− | ||
| β+ | 160Hf | ||||||||
| 160mTa | 310(90)# keV | 1.55(4) s | β+ (66%) | 160Hf | (9)+ | ||||
| α (34%) | 156Lu | ||||||||
| 161Ta | 73 | 88 | 160.95842(6)# | 3# s | β+ (95%) | 161Hf | 1/2+# | ||
| α (5%) | 157Lu | ||||||||
| 161mTa | 50(50)# keV | 2.89(12) s | 11/2−# | ||||||
| 162Ta | 73 | 89 | 161.95729(6) | 3.57(12) s | β+ (99.92%) | 162Hf | 3+# | ||
| α (.073%) | 158Lu | ||||||||
| 163Ta | 73 | 90 | 162.95433(4) | 10.6(18) s | β+ (99.8%) | 163Hf | 1/2+# | ||
| α (.2%) | 159Lu | ||||||||
| 164Ta | 73 | 91 | 163.95353(3) | 14.2(3) s | β+ | 164Hf | (3+) | ||
| 165Ta | 73 | 92 | 164.950773(19) | 31.0(15) s | β+ | 165Hf | 5/2−# | ||
| 165mTa | 60(30) keV | 9/2−# | |||||||
| 166Ta | 73 | 93 | 165.95051(3) | 34.4(5) s | β+ | 166Hf | (2)+ | ||
| 167Ta | 73 | 94 | 166.94809(3) | 1.33(7) min | β+ | 167Hf | (3/2+) | ||
| 168Ta | 73 | 95 | 167.94805(3) | 2.0(1) min | β+ | 168Hf | (2−,3+) | ||
| 169Ta | 73 | 96 | 168.94601(3) | 4.9(4) min | β+ | 169Hf | (5/2+) | ||
| 170Ta | 73 | 97 | 169.94618(3) | 6.76(6) min | β+ | 170Hf | (3)(+#) | ||
| 171Ta | 73 | 98 | 170.94448(3) | 23.3(3) min | β+ | 171Hf | (5/2−) | ||
| 172Ta | 73 | 99 | 171.94490(3) | 36.8(3) min | β+ | 172Hf | (3+) | ||
| 173Ta | 73 | 100 | 172.94375(3) | 3.14(13) h | β+ | 173Hf | 5/2− | ||
| 174Ta | 73 | 101 | 173.94445(3) | 1.14(8) h | β+ | 174Hf | 3+ | ||
| 175Ta | 73 | 102 | 174.94374(3) | 10.5(2) h | β+ | 175Hf | 7/2+ | ||
| 176Ta | 73 | 103 | 175.94486(3) | 8.09(5) h | β+ | 176Hf | (1)− | ||
| 176m1Ta | 103.0(10) keV | 1.1(1) ms | IT | 176Ta | (+) | ||||
| 176m2Ta | 1372.6(11)+X keV | 3.8(4) µs | (14−) | ||||||
| 176m3Ta | 2820(50) keV | 0.97(7) ms | (20−) | ||||||
| 177Ta | 73 | 104 | 176.944472(4) | 56.56(6) h | β+ | 177Hf | 7/2+ | ||
| 177m1Ta | 73.36(15) keV | 410(7) ns | 9/2− | ||||||
| 177m2Ta | 186.15(6) keV | 3.62(10) µs | 5/2− | ||||||
| 177m3Ta | 1355.01(19) keV | 5.31(25) µs | 21/2− | ||||||
| 177m4Ta | 4656.3(5) keV | 133(4) µs | 49/2− | ||||||
| 178Ta | 73 | 105 | 177.945778(16) | 9.31(3) min | β+ | 178Hf | 1+ | ||
| 178m1Ta | 100(50)# keV | 2.36(8) h | β+ | 178Hf | (7)− | ||||
| 178m2Ta | 1570(50)# keV | 59(3) ms | (15−) | ||||||
| 178m3Ta | 3000(50)# keV | 290(12) ms | (21−) | ||||||
| 179Ta | 73 | 106 | 178.9459295(23) | 1.82(3) a | EC | 179Hf | 7/2+ | ||
| 179m1Ta | 30.7(1) keV | 1.42(8) µs | (9/2)− | ||||||
| 179m2Ta | 520.23(18) keV | 335(45) ns | (1/2)+ | ||||||
| 179m3Ta | 1252.61(23) keV | 322(16) ns | (21/2−) | ||||||
| 179m4Ta | 1317.3(4) keV | 9.0(2) ms | IT | 179Ta | (25/2+) | ||||
| 179m5Ta | 1327.9(4) keV | 1.6(4) µs | (23/2−) | ||||||
| 179m6Ta | 2639.3(5) keV | 54.1(17) ms | (37/2+) | ||||||
| 180Ta | 73 | 107 | 179.9474648(24) | 8.152(6) h | EC (86%) | 180Hf | 1+ | ||
| β- (14%) | 180W | ||||||||
| 180m1Ta | 77.1(8) keV | Observationally Stable | 9− | 1.2(2)×10−4 | |||||
| 180m2Ta | 1452.40(18) keV | 31.2(14) µs | 15− | ||||||
| 180m3Ta | 3679.0(11) keV | 2.0(5) µs | (22−) | ||||||
| 180m4Ta | 4171.0+X keV | 17(5) µs | (23,24,25) | ||||||
| 181Ta | 73 | 108 | 180.9479958(19) | Observationally Stable | 7/2+ | 0.99988(2) | |||
| 181m1Ta | 6.238(20) keV | 6.05(12) µs | 9/2− | ||||||
| 181m2Ta | 615.21(3) keV | 18(1) µs | 1/2+ | ||||||
| 181m3Ta | 1485(3) keV | 25(2) µs | 21/2− | ||||||
| 181m4Ta | 2230(3) keV | 210(20) µs | 29/2− | ||||||
| 182Ta | 73 | 109 | 181.9501518(19) | 114.43(3) d | β- | 182W | 3− | ||
| 182m1Ta | 16.263(3) keV | 283(3) ms | IT | 182Ta | 5+ | ||||
| 182m2Ta | 519.572(18) keV | 15.84(10) min | 10− | ||||||
| 183Ta | 73 | 110 | 182.9513726(19) | 5.1(1) d | β- | 183W | 7/2+ | ||
| 183mTa | 73.174(12) keV | 107(11) ns | 9/2− | ||||||
| 184Ta | 73 | 111 | 183.954008(28) | 8.7(1) h | β- | 184W | (5−) | ||
| 185Ta | 73 | 112 | 184.955559(15) | 49.4(15) min | β- | 185W | (7/2+)# | ||
| 185mTa | 1308(29) keV | >1 ms | (21/2−) | ||||||
| 186Ta | 73 | 113 | 185.95855(6) | 10.5(3) min | β- | 186W | (2−,3−) | ||
| 186mTa | 1.54(5) min | ||||||||
| 187Ta | 73 | 114 | 186.96053(21)# | 2# min |
β- | 187W | 7/2+# | ||
| 188Ta | 73 | 115 | 187.96370(21)# | 20# s |
β- | 188W | |||
| 189Ta | 73 | 116 | 188.96583(32)# | 3# s |
7/2+# | ||||
| 190Ta | 73 | 117 | 189.96923(43)# | 0.3# s | |||||
Read more about this topic: Isotopes Of Tantalum
Famous quotes containing the word table:
“In New York, pretending to be above the struggle means no seat on the bus and a table next to the kitchen.”
—Mason Cooley (b. 1927)
“Many a time I have seen my mother leap up from the dinner table to engage the swarming flies with an improvised punkah, and heard her rejoice and give humble thanks simultaneously that Baltimore was not the sinkhole that Washington was.”
—H.L. (Henry Lewis)
“Will you greet your doom
As final; set him loaves and wine; knowing
The game is finished when he plays his ace,
And overturn the table and go into the next room?”
—Philip Larkin (1922–1986)