#104
Rutherfordium
transition metal· Solid·267 u
Rutherfordium is a chemical element with symbol Rf and atomic number 104, named in honor of physicist Ernest Rutherford. It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, 267Rf, has a half-life of approximately 1.3 hours. In the periodic table of the elements, it is a d - block element and the second of the fourth - row transition elements.
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Identity
- Symbol
- Rf
- Atomic Number
- 104
- Atomic Mass
- 267 u
- Category
- transition metal
- Block
- d-block
- Period
- 7
- Group
- 4
- Appearance
- Chemical element with atomic number 104 (Rf)
- Year Discovered
- 1964 CE
- Discovered By
- Joint Institute for Nuclear Research
- Named By
- Ernest Rutherford
Electrons
- Configuration
- [Rn] 5f14 6d2 7s2
- Full Configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d2
- Shells
- 2, 8, 18, 32, 32, 10, 2
- Electronegativity
- n/a
- Electron Affinity
- n/a
- Oxidation States
- +4
- Ionization Energies
- 580
Physical Properties
- State at
- Solid
- Melting Point
- 2400
- Boiling Point
- 5800
- Density
- 23.2
- Crystal Structure
- n/a
- Magnetic Ordering
- n/a
Mechanical
Thermal & Electrical
Abundance
- Universe
- 0
- Sun
- 0
- Meteorite
- 0
- Earth's Crust
- 0
- Ocean
- 0
- Human Body
- 0