PERIODIC ELEMENT
Ce (Cerium)
Atomic number | : | 58 |
Atomic mass | : | 140.12 g.mol-1 |
Electronegativity according to Pauling | : | 1.1 |
Density | : | 6.76 g.cm-3 at 20 °C |
Melting point | : | 799 °C |
Boiling point | : | 3426 °C |
Vanderwaals radius | : | 0.181 nm |
Ionic radius | : | 0.102 nm (+3) ; 0.087 nm (+4) |
Isotopes | : | 9 |
Electronic shell | : | [ Xe ] 4f1 5d1 6s2 |
Energy of first ionisation | : | 526.8 kJ.mol-1 |
Energy of second ionisation | : | 1045 kJ.mol-1 |
Energy of third ionisation | : | 1945.6 kJ.mol-1 |
Energy of fourth ionisation | : | 3537 kJ.mol-1 |
Standard Potential | : | - 2.48 V (Ce3+/ Ce) |
Discovered by | : | W. von Hisinger in 1903 |
Atomic Structure | Uses (heat-resistant alloys) | |