Nobelium
| Atomic Number: | 102 |
| Symbol: | No |
| Atomic weight: | (259) |
| Discovery: | April 1958 at Berkeley by A. Ghiorso, T. Sikkeland, J.R. Walton, and G.T. Seaborg |
| Electron Configuration: | [Rn]7s25f14 |
| Word Origin: | Named for Alfred Nobel, discoverer of dynamite. |
| Isotopes: | Ten isotopes of nobelium are recognized. Nobelium-255 has a half-life of 3 minutes. Nobelium-254 has a half-life of 55-s, Nobelium-252 has a half-life of 2.3-s, and Nobelium-257 has a half-life of 23-s. |
| Sources: | Ghiorso and his colleagues used a double-recoil technique. A heavy-ion linear accelerator was used to bombard a thin target of curium (95% Cm-244 and 4.5% Cm-246) with C-12 ions to produce No-102. The reaction proceeded according to the 246Cm(12C, 4n) reaction. |
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