No
Nobelium
Element 102 · 259.101 u
Nobelium is notable for preferring the +2 oxidation state, unlike most actinides.
Physical Properties
| Atomic Mass | 259.101 u |
| Density | 9.9 g/cm³ |
| Melting Point | 1100.0 K |
| Appearance | Metallic (predicted) |
| State at Room Temp | Solid |
Chemical Properties
| Electronegativity | 1.3 (Pauling) |
| 1st Ionization Energy | 642.0 kJ/mol |
| Electron Affinity | -223.22 kJ/mol |
| Oxidation States | +2, +3 |
Atomic Properties
| Electron Configuration | [Rn] 5f14 7s2 |
Discovery
| Discovered By | Joint Institute for Nuclear Research (Dubna) |
| Discovery Year | 1966 |
| Location | Dubna, Russia |
| Named After | Named after Alfred Nobel, inventor of dynamite and founder of the Nobel Prize |
About Nobelium
Nobelium's discovery was disputed between American and Soviet laboratories for decades. It unusually prefers the +2 oxidation state, unlike most actinides which prefer +3.
Uses & Applications
No practical applications. Scientific research only.
Fun Fact
Nobelium's discovery was one of the most contentious in chemistry, with three countries claiming priority over decades.
Isotopes
| Mass Number | Abundance | Half-Life | Stable |
| 253 | - | 1.62 minutes | No |
| 259 | - | 58 minutes | No |
Electron Configuration
[Rn] 5f14 7s2