SymbolRf
Latin nameRutherfordium
Atomic number104
Period7
Element categoryTransition elements
Relative atomic mass261.1087
GroupIII.B
Oxidation numbers
4
Electron configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 6d2 7s2
State
Solid
Discovery
1964
Stable isotopes
0
Unstable isotopes
6