104
Rf
Rutherfordium
Transition metal period 7 group 4 d-block discovered: 1964
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 104
- Atomic mass
- 267.122 a.m.u.
- Electron configuration
- [Rn]7s2 5f14 6d2
- Oxidation states
- +4
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Solid