104
267 u
Rf
Rutherfordium
Transition Metal
Atomic Structure
Physical State
Group
4
Period
7
Block
d
Electron Configuration
[Rn] 5f¹⁴ 6d² 7s²
Physical Properties
Atomic Mass:
267 u
Electronegativity:
N/A
Atomic Radius:
N/A
Ionization Energy:
6 eV
Density:
23.2 g/cm³
Melting Point:
2400 K
Boiling Point:
5800 K
Historical Information
Discovered By:
Joint Institute for Nuclear Research
Year Discovered:
1964