98 Cf
Actinide
Californium
Used in neutron sources.
Properties of Californium
- Atomic number (Z)
- 98
- Symbol
- Cf
- Atomic mass
- 251 g/mol
- Category
- Actinide
- Group
- 3
- Period
- 7
- Electron configuration
- [Rn] 5f¹⁰ 7s²
- Electronegativity (Pauling)
- 1.3
- Atomic radius
- —
- First ionization energy
- 608 kJ/mol
- Melting point
- 1173 K (899.9 °C)
- Boiling point
- 1743 K (1469.8 °C)
- Density
- 15.1 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1950
Frequently asked questions
What is Californium?
Californium (Cf) is an actinide, element number 98 on the periodic table. Used in neutron sources.
What is the atomic number and atomic mass of Californium?
Californium has atomic number 98 and an atomic mass of about 251 g/mol.
What is the electron configuration of Californium?
The electron configuration of Californium is [Rn] 5f¹⁰ 7s².
Where is Californium on the periodic table?
Californium sits in group 3, period 7, and is classified as a actinide.