Periodic Table of Elements
Md - Mendelevium
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Nuclides / Isotopes
| Nuc- lide | Atomic Mass | NN | Abun % | Spin | Half Life | DM | DT | BR % | Decay Energy (MeV) |
|---|---|---|---|---|---|---|---|---|---|
| Md245 | 245.091 | 144 | Syn | 7/2 | 0.35s | ||||
| Md246 | 246.082 | 145 | Syn | 1s | |||||
| Md247 | 247.082 | 146 | Syn | 1.12s | α | Es243 | <=100 | 8.820 | |
| Md248 | 248.083 | 147 | Syn | 7s | ε | Fm248 | 80 | 5.250 | |
| 7s | α | Es244 | 20 | 8.700 | |||||
| 7s | SF | <=0.05 | 8.700 | ||||||
| Md249 | 249.083 | 148 | Syn | 24s | α | Es245 | ~70 | 8.460 | |
| 24s | ε | Fm249 | ~30 | 3.700 | |||||
| Md250 | 250.084 | 149 | Syn | 52s | ε | Fm250 | 93 | 4.600 | |
| 52s | α | Es246 | 7 | 8.310 | |||||
| Md251 | 251.085 | 150 | Syn | 4m | ε | Fm251 | >=90 | 3.070 | |
| 4m | α | Es247 | <=10 | 8.020 | |||||
| Md252 | 252.087 | 151 | Syn | 2.3m | ε | Fm252 | 3.890 | ||
| Md253 | 253.087 | 152 | Syn | ~6m | ε | Fm253 | <=100 | 1.960 | |
| Md254 | 254.09 | 153 | Syn | 10m | ε | Fm254 | 2.680 | ||
| Md255 | 255.0911 | 154 | Syn | 7/2- | 27m | ε | Fm255 | 92 | 1.043 |
| 27m | α | Es251 | 8 | 7.907 | |||||
| 27m | SF | <=0.15 | 7.907 | ||||||
| Md256 | 256.0941 | 155 | Syn | 0-, 1- | 78.1m | ε | Fm256 | 90.7 | 2.130 |
| 78.1m | α | Es252 | 9.3 | 7.897 | |||||
| 78.1m | SF | <2.8 | |||||||
| Md257 | 257.0955 | 156 | Syn | 7/2- | 5.52h | ε | Fm257 | 90 | 0.406 |
| 5.52h | α | Es253 | 10 | 7.558 | |||||
| 5.52h | SF | <4 | |||||||
| Md258 | 258.0984 | 157 | Syn | 8- | 51.5d | ε | Fm258 | 1.230 | |
| meta state 0.000MeV | Syn | 1- | 57m | α | Es254 | 7.271 | |||
| 57m | SF | 7.271 | |||||||
| Md259 | 259.101 | 158 | Syn | 7/2- | 96m | SF | ~100 | ||
| 96m | α | Es255 | <3 | 7.100 | |||||
| Md260 | 260.104 | 159 | Syn | 31.8d | SF | >73 | |||
| 31.8d | α | Es256 | <25 | 7.000 | |||||
| 31.8d | ε | Fm260 | <15 | ||||||
| 31.8d | β- | No260 | <10 | 1.000 | |||||
| Md261 | 160 | Syn | |||||||
| Nuclide | Potential Parent Nuclides |
|---|---|
| Md245 | None known |
| Md246 | None known |
| Md247 | None known |
| Md248 | Lr252 (Syn) |
| Md249 | Lr253 (Syn) |
| Md250 | Lr254 (Syn) |
| Md251 | Lr255 (Syn) No251 (Syn) |
| Md252 | Lr256 (Syn) |
| Md253 | Lr257 (Syn) No253 (Syn) |
| Md254 | Lr258 (Syn) No254 (Syn) |
| Md255 | Lr259 (Syn) No255 (Syn) |
| Md256 | Lr260 (Syn) |
| Md257 | None known |
| Md258 | None known |
| meta state 0.000MeV | None known |
| Md259 | No259 (Syn) |
| Md260 | None known |
| Md261 | None known |
Key:
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