| Nuc- lide | Atomic Mass | NN | Abun % | Spin | Half Life | DM | DT | BR % | Decay Energy (MeV) |
|---|---|---|---|---|---|---|---|---|---|
| Ta156 | 155.972 | 83 | Syn | 2- | 144ms | ε | Hf156 | 50 | 1.029 |
| 144ms | P | Hf155 | 50 | 1.029 | |||||
| Ta157 | 156.968 | 84 | Syn | 1/2+ | 10.1ms | α | Lu153 | >77 | 6.380 |
| Ta158 | 157.966 | 85 | Syn | 2- | 36.5ms | α | Lu154 | 93 | 6.210 |
| 36.5ms | ε | Hf158 | 7 | 10.900 | |||||
| Ta159 | 158.963 | 86 | Syn | 0.57s | α | Lu155 | 80 | 5.750 | |
| 0.57s | ε | Hf159 | 20 | 8.490 | |||||
| Ta160 | 159.961 | 87 | Syn | 9+ | 1.55s | ε | Hf160 | 66 | 9.900 |
| 1.55s | α | Lu156 | 34 | 5.450 | |||||
| Ta161 | 160.9584 | 88 | Syn | 2.7s | ε | Hf161 | ~95 | 7.490 | |
| 2.7s | α | Lu157 | ~5 | 5.280 | |||||
| Ta162 | 161.957 | 89 | Syn | 3.52s | ε | Hf162 | 99.92 | 9.260 | |
| 3.52s | α | Lu158 | 0.08 | 5.010 | |||||
| Ta163 | 162.9543 | 90 | Syn | 10.6s | ε | Hf163 | ~99.8 | 6.800 | |
| 10.6s | α | Lu159 | ~0.2 | 4.750 | |||||
| Ta164 | 163.954 | 91 | Syn | 3+ | 14.2s | ε | Hf164 | 8.500 | |
| Ta165 | 164.951 | 92 | Syn | 31s | ε | Hf165 | 5.800 | ||
| Ta166 | 165.95 | 93 | Syn | 2+ | 34.4s | ε | Hf166 | 7.700 | |
| Ta167 | 166.948 | 94 | Syn | 3/2+ | 1.4m | ε | Hf167 | 5.000 | |
| Ta168 | 167.948 | 95 | Syn | 3+ | 2m | ε | Hf168 | 6.700 | |
| Ta169 | 168.946 | 96 | Syn | 5/2- | 4.9m | ε | Hf169 | 4.440 | |
| Ta170 | 169.946 | 97 | Syn | 3+ | 6.76m | ε | Hf170 | 6.000 | |
| Ta171 | 170.944 | 98 | Syn | 5/2- | 23.3m | ε | Hf171 | 3.700 | |
| Ta172 | 171.945 | 99 | Syn | 3+ | 36.8m | ε | Hf172 | 4.920 | |
| Ta173 | 172.944 | 100 | Syn | 5/2- | 3.14h | ε | Hf173 | 2.790 | |
| Ta174 | 173.9442 | 101 | Syn | 3+ | 1.05h | ε | Hf174 | 3.850 | |
| Ta175 | 174.944 | 102 | Syn | 7/2+ | 10.5h | ε | Hf175 | 2.000 | |
| Ta176 | 175.945 | 103 | Syn | 1- | 8.09h | ε | Hf176 | 3.110 | |
| Ta177 | 176.9445 | 104 | Syn | 7/2+ | 56.56h | ε | Hf177 | 1.166 | |
| Ta178 | 177.946 | 105 | Syn | 1+ | 9.31m | ε | Hf178 | 1.910 | |
| meta state 0.000MeV | Syn | 7- | 2.36h | ε | Hf178 | 1.910 | |||
| meta state 1.471MeV | Syn | 15- | 60ms | IT | Ta178 | 1.471 | |||
| Ta179 | 178.9459 | 106 | Syn | 7/2+ | 1.82y | ε | Hf179 | 0.110 | |
| meta state 1.318MeV | Syn | 25/2+ | 9ms | IT | Ta179 | 1.318 | |||
| meta state 2.641MeV | Syn | 37/2+ | 52ms | IT | Ta179 | 2.641 | |||
| Ta180 | 179.9475 | 107 | 0.012 | 1+ | 8.125h | ε | Hf180 | 86 | 0.854 |
| 8.125h | β+ | W180 | 14 | 0.708 | |||||
| meta state 0.075MeV | Syn | 9- | >1.2E 15y | β- | W180 | ||||
| >1.2E 15y | ε | Hf180 | |||||||
| Ta181 | 180.948 | 108 | 99.988 | 7/2+ | Stable | ||||
| Ta182 | 181.9502 | 109 | Syn | 3- | 114.43d | β- | W182 | 1.814 | |
| meta state 0.016MeV | Syn | 5+ | 283ms | IT | 0.016 | ||||
| meta state 0.520MeV | Syn | 10- | 15.84m | IT | 0.520 | ||||
| Ta183 | 182.9514 | 110 | Syn | 1/2+ | 5.1d | β- | W183 | 1.070 | |
| Ta184 | 183.954 | 111 | Syn | 5- | 8.7h | β- | W184 | 2.870 | |
| Ta185 | 184.9556 | 112 | Syn | 7/2+ | 49.4m | β- | W185 | 1.992 | |
| Ta186 | 185.9586 | 113 | Syn | 2-, 3- | 10.5m | β- | W186 | 3.900 | |
| Ta187 | 186.96 | 114 | Syn | ||||||
| Ta188 | 115 | Syn | |||||||
| Nuclide | Potential Parent Nuclides |
|---|---|
| Ta156 | Re160 (Syn) |
| Ta157 | Re161 (Syn) |
| Ta158 | Re162 (Syn) |
| Ta159 | Re163 (Syn) W159 (Syn) |
| Ta160 | Re164 (Syn) |
| Ta161 | Re165 (Syn) W161 (Syn) |
| Ta162 | Re166 (Syn) W162 (Syn) |
| Ta163 | Re167 (Syn) W163 (Syn) |
| Ta164 | Re168 (Syn) W164 (Syn) |
| Ta165 | Re169 (Syn) W165 (Syn) |
| Ta166 | W166 (Syn) |
| Ta167 | W167 (Syn) |
| Ta168 | W168 (Syn) |
| Ta169 | W169 (Syn) |
| Ta170 | W170 (Syn) |
| Ta171 | W171 (Syn) |
| Ta172 | W172 (Syn) |
| Ta173 | W173 (Syn) |
| Ta174 | W174 (Syn) |
| Ta175 | W175 (Syn) |
| Ta176 | W176 (Syn) |
| Ta177 | W177 (Syn) |
| Ta178 | Ta178m1 (Syn) W178 (Syn) |
| meta state 0.000MeV | None known |
| meta state 1.471MeV | None known |
| Ta179 | Ta179m (Syn) Ta179m1 (Syn) W179 (Syn) W179m (Syn) |
| meta state 1.318MeV | None known |
| meta state 2.641MeV | None known |
| Ta180 | Hf180m (Syn) |
| meta state 0.075MeV | None known |
| Ta181 | Hf181 (Syn) W181 (Syn) |
| Ta182 | Hf182 (Syn) Hf182m (Syn) |
| meta state 0.016MeV | None known |
| meta state 0.520MeV | None known |
| Ta183 | Hf183 (Syn) Re187 (Natural) |
| Ta184 | Hf184 (Syn) Hf184m (Syn) |
| Ta185 | None known |
| Ta186 | None known |
| Ta187 | None known |
| Ta188 | None known |
Key:
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Kenneth Barbalace. Periodic Table of Elements - Ta - Tantalum. EnvironmentalChemistry.com. 1995 - 2024. Accessed on-line: 12/25/2024
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