Rutherfordium (Rf)
Rutherfordium (Rf, element 104) is a transition metal in group 4, period 7. Atomic mass 267, electron configuration [Rn] 5f¹⁴ 6d² 7s², uses and facts.
About Rutherfordium
Rutherfordium is a transition metal with the symbol Rf and atomic number 104. Its state at room temperature is not known, because too little of it has been made, and it sits in group 4, period 7 of the periodic table. Rutherfordium was discovered in 1969 by Joint Institute for Nuclear Research.
Rutherfordium key facts
- Atomic number: 104
- Symbol: Rf
- Atomic mass: 267 u
- Category: transition metal
- Group: 4
- Period: 7
- State at room temperature: not known
- Electron configuration: [Rn] 5f¹⁴ 6d² 7s²
- Electronegativity (Pauling): not assigned
- Melting point: not known
- Boiling point: not known
- Density: not known
- Common oxidation states: not known
Electron configuration
The electron configuration of rutherfordium is [Rn] 5f¹⁴ 6d² 7s². The part in brackets is the noble gas core; the rest shows how the outer electrons fill their subshells.
Uses of rutherfordium
- Research only
Did you know?
Named after Ernest Rutherford. Half-life of just 65 seconds for its most stable isotope.
Other elements in group 4 and neighbours
Frequently asked questions
What is the atomic number of rutherfordium?
The atomic number of rutherfordium is 104, which means every rutherfordium atom has 104 protons.
What is the electron configuration of rutherfordium?
The electron configuration of rutherfordium is [Rn] 5f¹⁴ 6d² 7s².
What group and period is rutherfordium in?
Rutherfordium is a transition metal in group 4, period 7.
What state is rutherfordium at room temperature?
The state of rutherfordium at room temperature is not known, because too little of it has been made.
What is rutherfordium used for?
Rutherfordium is used for research only.