Californium (Cf) — Element 98: Properties & Data | Aladdin Scientific
Californium(Cf) — Element 98
Californium (Cf) is a actinide with atomic number 98 and atomic mass 251.08. It has melting point 1173 K (900 °C). It sits in period 7 of the periodic table and was discovered in 1950.
Key facts
| Atomic mass | 251.0796 u |
|---|---|
| Electron configuration | [Rn]7s2 5f10 |
| Oxidation states | +3 |
| Electronegativity (Pauling) | 1.3 |
| Atomic radius (van der Waals) | 245 pm |
| Ionization energy | 6.3 eV |
| Melting point | 1173 K |
| Standard state | Solid |
| Year discovered | 1950 |
Frequently asked questions
What is the electron configuration of californium?
The ground-state electron configuration of californium is [Rn]7s2 5f10.
What group and period is californium in?
Californium (Cf) is in period 7 (actinide series) of the periodic table, classified as a actinide.
What is the melting point of californium?
Californium melts at 1173 K (900 °C).
What is the standard state of californium?
Californium is a solid at standard temperature and pressure.
Related elements
About this data: property values compiled from IUPAC Standard Atomic Weights (2021), the NIST Atomic Spectra Database, and PubChem. Curated by the Aladdin Scientific technical team. Last reviewed: .