Californium (Cf)
Californium
Californium (Cf) is an actinide in period 7. Its relative atomic mass is [251] and the molar mass of the atom is [251] g/mol.
Atomic number 98
Atomic mass [251] predicted
Molar mass [251] g/mol
Category Actinide Solid
Properties of californium
| Atomic number | 98 |
|---|---|
| Symbol | Cf |
| Latin name | Californium |
| Relative atomic mass | [251] |
| Molar mass | [251] g/mol |
| Group, period, block | —, 7, f |
| Category | Actinide |
| State at 20 °C | Solid |
| Electron configuration | [Rn] 5f¹⁰ 7s² |
| Electronegativity (Pauling) | 1.3 |
Electron configuration of californium
Electrons per shell
K2L8M18N32O28P8Q2
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f¹⁰ 6s² 6p⁶ 7s²
Noble-gas notation
98 protons · 98 electrons[Rn] 5f¹⁰ 7s²
Formula and compounds of californium
Simple substanceCfcaliforniumMolar mass of Cf: [251] g/mol
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Frequently asked questions
The relative atomic mass of californium is [251], so the molar mass of the atom is [251] g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f¹⁰ 6s² 6p⁶ 7s². Noble-gas notation: [Rn] 5f¹⁰ 7s².