104 Rf
Transition metal
Rutherfordium
Synthetic; named after Rutherford.
Properties of Rutherfordium
- Atomic number (Z)
- 104
- Symbol
- Rf
- Atomic mass
- 267 g/mol
- Category
- Transition metal
- Group
- 4
- Period
- 7
- Electron configuration
- [Rn] 5f¹⁴ 6d² 7s²
- Electronegativity (Pauling)
- —
- Atomic radius
- —
- First ionization energy
- 580 kJ/mol
- Melting point
- 2400 K (2126.8 °C)
- Boiling point
- 5800 K (5526.9 °C)
- Density
- 23.2 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1964
Frequently asked questions
What is Rutherfordium?
Rutherfordium (Rf) is a transition metal, element number 104 on the periodic table. Synthetic; named after Rutherford.
What is the atomic number and atomic mass of Rutherfordium?
Rutherfordium has atomic number 104 and an atomic mass of about 267 g/mol.
What is the electron configuration of Rutherfordium?
The electron configuration of Rutherfordium is [Rn] 5f¹⁴ 6d² 7s².
Where is Rutherfordium on the periodic table?
Rutherfordium sits in group 4, period 7, and is classified as a transition metal.