Periodic Table of Elements
Fr - Francium
Francium Menu
- Francium Page One
- Francium Page Two
Nuclides / Isotopes
| Nuc- lide | Atomic Mass | NN | Abun % | Spin | Half Life | DM | DT | BR % | Decay Energy (MeV) |
|---|---|---|---|---|---|---|---|---|---|
| Fr200 | 113 | Syn | 3+ | 19ms |  | ||||
| meta state | Syn | 10- | 0.57s | | |||||
| Fr201 | 201.004 | 114 | Syn | 9/2- | 48ms |  | Rn201 | <1 | 7.900 |
| 48ms | | At197 | 7.540 | ||||||
| Fr202 | 202.003 | 115 | Syn | 3+ | 0.34s | | At198 | ~97 | 7.389 |
| 0.34s | | Rn202 | ~3 | 9.400 | |||||
| meta state 0.102MeV | Syn | 10- | 0.34s | | At198 | ~97` | 7.491 | ||
| 0.34s | | Rn202 | ~3 | 9.502 | |||||
| Fr203 | 203.001 | 116 | Syn | 9/2- | 0.55s | | At199 | ~95 | 7.280 |
| 0.55s | | Rn203 | ~5 | 7.200 | |||||
| Fr204 | 204.001 | 117 | Syn | 3+ | 1.7s | | At200 | ~80 | 7.170 |
| 1.7s | | Rn204 | ~20 | 8.600 | |||||
| meta state 0.041MeV | Syn | 7+ | 2.6s | | At200 | <=100 | 7.211 | ||
| meta state 0.316MeV | Syn | 10- | ~1s | | At200 | <=100 | 7.486 | ||
| ~1s | IT | Fr204 | 7.486 | ||||||
| Fr205 | 204.999 | 118 | Syn | 9/2- | 3.85s | | Rn205 | <1 | 6.520 |
| 3.85s | | At204 | 7.060 | ||||||
| Fr206 | 205.998 | 119 | Syn | 5+ | 15.9s | | At202 | 6.926 | |
| 15.9s | | Rn206 | 7.750 | ||||||
| meta state 0.000MeV | Syn | | At202 | <=84 | 6.926 | ||||
| meta state 0.650MeV | Syn | 10- | 0.7s | | At202 | 7.576 | |||
| 0.7s | IT | Fr206 | 0.650 | ||||||
| Fr207 | 206.997 | 120 | Syn | 9/2- | 14.8s | | At203 | 95 | 6.900 |
| 14.8s | | Rn207 | 5 | 5.710 | |||||
| Fr208 | 207.9971 | 121 | Syn | 7+ | 59.1s | | At204 | 90 | 6.770 |
| 59.1s | | Rn208 | 10 | 6.990 | |||||
| Fr209 | 208.9959 | 122 | Syn | 9/2- | 50s | | At205 | 89 | 6.777 |
| 50s | | Rn209 | 11 | 5.160 | |||||
| Fr210 | 209.9964 | 123 | Syn | 6+ | 3.18m | | At206 | 60 | 6.700 |
| 3.18m | | Rn210 | 40 | 6.262 | |||||
| Fr211 | 210.9955 | 124 | Syn | 9/2- | 3.10m | | At207 | >80 | 6.660 |
| 3.10m | | Rn211 | <20 | 4.605 | |||||
| Fr212 | 211.9962 | 125 | Syn | 5+ | 20m | | Rn212 | 57 | 5.117 |
| 20m | | At208 | 43 | 6.529 | |||||
| Fr213 | 212.9962 | 126 | Syn | 9/2- | 34.6s | | At209 | 99.45 | 6.905 |
| 34.6s | | Rn213 | 0.55 | 2.148 | |||||
| Fr214 | 213.999 | 127 | Syn | 1- | 5ms | | At210 | 8.589 | |
| meta state 0.122MeV | Syn | 8- | 3.35ms | | At210 | 8.711 | |||
| Fr215 | 215.0003 | 128 | Syn | 9/2- | 86ns | | At211 | 9.540 | |
| Fr216 | 216.0032 | 129 | Syn | 1- | 0.70us | | Rn216 | <2.0E -7 | 2.729 |
| 0.70us | | At212 | 9.175 | ||||||
| meta state 0.133MeV | Syn | 3- | 71ns | | At212 | >50 | 9.308 | ||
| Fr217 | 217.0046 | 130 | Syn | 9/2- | 22us | | At213 | 8.469 | |
| Fr218 | 218.0076 | 131 | Syn | 1- | 1ms | | At214 | 8.014 | |
| meta state 0.086MeV | Syn | 22ms | | At214 | <=100 | 8.100 | |||
| 22ms | IT | Fr218 | 0.086 | ||||||
| Fr219 | :219.00924 | 132 | Syn | 9/2- | 20ms | | At215 | 7.449 | |
| Fr220 | 220.0123 | 133 | Syn | 1+ | 27.4s | | At216 | 99.65 | 6.801 |
| 27.4s |  - | Ra220 | 0.35 | 1.209 | |||||
| Fr221 | 221.0143 | 134 | Syn | 5/2- | 4.9m | - | Ra221 | <0.1 | 0.312 |
| 4.9m | | At217 | 6.458 | ||||||
| Fr222 | 222.0175 | 135 | Syn | 2- | 14.2m | - | Ra222 | 2.033 | |
| Fr223 | 223.0197 | 136 | 100. | 3/2- | 21.8m | - | Ra223 | 99.99 | 1.149 |
| 21.8m | | At219 | 0.0060 | 5.430 | |||||
| Fr224 | 224.0232 | 137 | Syn | 1- | 3.33m | - | Ra224 | 2.830 | |
| Fr225 | 225.0256 | 138 | Syn | 3/2- | 4m | - | Ra225 | 1.866 | |
| Fr226 | 226.0293 | 139 | Syn | 1- | 49s | - | Ra226 | 3.670 | |
| Fr227 | 227.032 | 140 | Syn | 1/2+ | 2.47m | - | Ra227 | 2.490 | |
| Fr228 | 228.036 | 141 | Syn | 2- | 38s | - | Ra228 | <=100 | 4.340 |
| Fr229 | 229.038 | 142 | Syn | 1/2+ | 50s | - | Ra229 | ||
| Fr230 | 230.043 | 143 | Syn | 19.1s | - | Ra230 | |||
| Fr231 | 231.045 | 144 | Syn | 17.5s | - | Ra231 | |||
| Nuclide | Potential Parent Nuclides |
|---|---|
| Fr200 | None known |
| meta state | None known |
| Fr201 | None known |
| Fr202 | None known |
| meta state 0.102MeV | None known |
| Fr203 | None known |
| Fr204 | Fr204m1 (Syn) |
| meta state 0.041MeV | None known |
| meta state 0.316MeV | None known |
| Fr205 | Ac209 (Syn) Ra205 (Syn) |
| Fr206 | Ac210 (Syn) Fr206m1 (Syn) |
| meta state 0.000MeV | None known |
| meta state 0.650MeV | None known |
| Fr207 | Ac211 (Syn) Ra207 (Syn) Ra207m (Syn) |
| Fr208 | Ac212 (Syn) Ra208 (Syn) |
| Fr209 | Ac213 (Syn) Ra209 (Syn) |
| Fr210 | Ac214 (Syn) Ra210 (Syn) |
| Fr211 | Ac215 (Syn) Ra211 (Syn) |
| Fr212 | Ac216 (Syn) Ac216m (Syn) Ra212 (Syn) |
| Fr213 | Ac217 (Syn) Ra213 (Syn) |
| Fr214 | Ac218 (Syn) Ra214 (Syn) |
| meta state 0.122MeV | None known |
| Fr215 | Ac219 (Syn) |
| Fr216 | Ac220 (Syn) Ra216 (Syn) |
| meta state 0.133MeV | None known |
| Fr217 | Ac221 (Syn) |
| Fr218 | Ac222 (Syn) Ac222m (Syn) Fr218m (Syn) |
| meta state 0.086MeV | None known |
| Fr219 | Ac223 (Syn) |
| Fr220 | Ac224 (Syn) |
| Fr221 | Ac225 (Syn) Rn221 (Syn) |
| Fr222 | Ac226 (Syn) |
| Fr223 | Ac227 (Natural) Rn223 (Syn) |
| Fr224 | Rn224 (Syn) |
| Fr225 | Rn225 (Syn) |
| Fr226 | Rn226 (Syn) |
| Fr227 | Rn227 (Syn) |
| Fr228 | Rn228 (Syn) |
| Fr229 | None known |
| Fr230 | None known |
| Fr231 | None known |
Key:
| |
Francium Menu
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