Rutherfordium (Rf) is a synthetic, highly radioactive chemical element belonging to the category Transition metal, with atomic number 104 and atomic mass 267.0000 u (for its most stable isotope). This sheet describes its fundamental properties, periodic position and physical characteristics.
Identity
- Name: Rutherfordium
- Symbol: Rf
- Atomic number: 104
- Atomic mass: 267.0000 u
Position in the periodic table
- Group: 4
- Period: 7
- Category: Transition metal
Physico-chemical properties
- Standard state: Solid (predicted)
- Melting point: Unknown experimentally; predicted to be very high (around 2100°C)
- Density: Very high (predicted around 23 g/cm³)
- Electron configuration: [Rn] 5f¹⁴ 6d² 7s²
Scientific description
Rutherfordium is a synthetic, highly radioactive chemical element with symbol Rf and atomic number 104. It belongs to the category of transition metals and occupies group 4 and period 7. Its atomic mass is taken as 267.0000 u, corresponding to its most stable known isotope.