58
140.12 u
Ce
Cerium
Lanthanide
Atomic Structure
Physical State
Group
N/A
Period
6
Block
f
Electron Configuration
[Xe] 4f¹ 5d¹ 6s²
Physical Properties
Atomic Mass:
140.12 u
Electronegativity:
1.12
Atomic Radius:
270 pm
Ionization Energy:
5.539 eV
Density:
6.77 g/cm³
Melting Point:
1068 K
Boiling Point:
3716 K
Historical Information
Discovered By:
Martin Heinrich Klaproth
Year Discovered:
1803