No
Nobelium
العنصر 102 · 259.101 u
Nobelium is notable for preferring the +2 oxidation state, unlike most actinides.
Physical Properties
| الكتلة الذرية | 259.101 u |
| الكثافة | 9.9 g/cm³ |
| Melting Point | 1100.0 K |
| المظهر | Metallic (predicted) |
| State at Room Temp | Solid |
الخواص الكيميائية
| السالبية الكهربائية | 1.3 (Pauling) |
| طاقة التأين الأولى | 642.0 kJ/mol |
| القرب الإلكتروني | -223.22 kJ/mol |
| Oxidation States | +2, +3 |
الخصائص الذرية
| تشكيل الإلكترون | [Rn] 5f14 7s2 |
اكتشاف
| اكتشفها | Joint Institute for Nuclear Research (Dubna) |
| سنة الاكتشاف | 1966 |
| الموقع | Dubna, Russia |
| Named After | Named after Alfred Nobel, inventor of dynamite and founder of the Nobel Prize |
عن 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.
حقيقة مضحكة
Nobelium's discovery was one of the most contentious in chemistry, with three countries claiming priority over decades.
النظائر
| Mass Number | الوفرة | نصف العمر | Stable |
| 253 | - | 1.62 minutes | No |
| 259 | - | 58 minutes | No |
تشكيل الإلكترون
[Rn] 5f14 7s2