Rf
Rutherfordium
العنصر 104 · 267.122 u
الفلزات الانتقالية
قطاع د
Period 7
المجموعة 4
Solid at RT
Radioactive
t½ 1.3 hours
Synthetic
Wikipedia →
Rutherfordium was the first transactinide element synthesized.
Physical Properties
| الكتلة الذرية | 267.122 u |
| الكثافة | 23.2 g/cm³ |
| Melting Point | 2400.0 K |
| نقطة الغليان | 5800.0 K |
| المظهر | Metallic (predicted) |
| State at Room Temp | Solid |
الخواص الكيميائية
| طاقة التأين الأولى | 580.0 kJ/mol |
| Oxidation States | +4 |
الخصائص الذرية
| تشكيل الإلكترون | [Rn] 5f14 6d2 7s2 |
اكتشاف
| اكتشفها | Joint Institute for Nuclear Research / Lawrence Berkeley National Laboratory |
| سنة الاكتشاف | 1964 |
| الموقع | Dubna, Russia / Berkeley, USA |
| Named After | Named after Ernest Rutherford, discoverer of the atomic nucleus |
عن Rutherfordium
Rutherfordium is a synthetic element whose discovery was disputed during the Cold War. It is expected to behave like hafnium. Only a few atoms have been produced at a time.
Uses & Applications
No practical applications. Scientific research only.
حقيقة مضحكة
Rutherfordium sparked the 'Transfermium Wars,' a Cold War dispute over naming rights for elements 104-106.
النظائر
| Mass Number | الوفرة | نصف العمر | Stable |
| 261 | - | 68 seconds | No |
| 267 | - | 1.3 hours | No |
تشكيل الإلكترون
[Rn] 5f14 6d2 7s2