Atomic Properties
- Atomic Number
- 58
- Atomic Mass
- 140.1200 u
- Electron Configuration
- [Xe] 4f1 5d1 6s2
- Electronegativity
- 1.12
- Block
- f-block
- Group
- —
- Period
- 6
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 1068.00 K
- Boiling Point
- 3716.00 K
- Density
- 6.7700 g/cm³
About Cerium
Most abundant lanthanide; used in catalytic converters and self-cleaning ovens.
Isotopes of Cerium
Cerium has 4 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 136Ce | 136 | 135.9071292 | 0.1850% | Stable |
| 138Ce | 138 | 137.905991 | 0.2510% | Stable |
| 140Ce | 140 | 139.9054431 | 88.45% | Stable |
| 142Ce | 142 | 141.9092504 | 11.11% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)