Comparison of Californium and Lawrencium

Attribute	Lawrencium ×	Californium ×
Standard state	Solid	Solid
Electron configuration	[Rn]7s²5f¹⁴6d¹	[Rn]7s²5f¹⁰
Atomic mass (u)	266.12	251.07959
Electronegativity (pauling scale)	1.3	1.3
Oxidation states	+3	+3
Ionization energy (eV)	-	6.3
Atomic radius (van der waals) (pm)	-	245
Melting point (K)	1900	1173
Atomic number	103	98
Group name	Actinide	Actinide
Symbol	Lr	Cf
Discovered (year)	1961	1950