Name: Cerium
Symbol: Ce
Atomic Number: 58
Atomic Mass: 146.116 g
Number of Protons/Electrons: 58
Number of Neutrons: 82
Ionic Radius: Ce³⁺ / 1.034 Angstrom
Ce4+ / 0.92 Angstrom
Metal
Melting Point: 798.0 °C
Boiling Point: 3527.0 °C
Density @ 293 K: 6.770 g/cm³
Oxide
Melting Point: 2600.0 °C
Density cubic C: 6.1066 g/cm³
Formula: CeO₂
Molecular weight: 172.12 g
Metal %: 81.4
Toxicity LD 50.PO: (rat) > 5000 mg/kg
Dehydrated Carbonate
Formula *: Ce2(CO3)3
Molecular weight: 460.27 g
Oxide %: 74.8
Anhydrous Chloride
Formula *: CeCl3
Molecular weight: 246.48 g
Oxide %: 69.85
Toxicity LD 50.PO: (rat) 2111 mg/kg
(mouse) 5277 mg/kg
Anhydrous Fluoride
Formula *: CeF3
Molecular weight: 197.12 g
Oxide %: 87.3
Hydroxide
Formula *: Ce(OH)3
Molecular weight: 191.14 g
Oxide %: 90.05
Formula *: Ce(OH)4
Molecular weight: 208.15 g
Oxide %: 82.7
Dehydrated Nitrate
Formula *: Ce(NO3)3
Molecular weight: 326.13 g
Oxide %: 52.8
Toxicity LD 50.PO: (rat) 4200 mg/kg
Dehydrated Oxalate
Formula *: Ce2(C2O₄)3
Molecular weight: 544.30 g
Oxide %: 63.25
Anhydrous sulfate
Formula *: Ce2(SO₄)3
Molecular weight: 568.41 g
Oxide %: 60.55
Formula *: Ce(SO₄)2
Molecular weight: 332.24 g
Oxide %: 51.8

Date of discovery: 1803
Discoverer: W. von Hisinger