Comparison of Lutetium and Curium

Attribute	Curium ×	Lutetium ×
Standard state	Solid	Solid
Electron configuration	[Rn]7s²5f⁷6d¹	[Xe]6s²4f¹⁴5d¹
Atomic mass (u)	247.07035	174.9668
Electronegativity (pauling scale)	1.3	1.27
Oxidation states	+3	+3
Ionization energy (eV)	6.02	5.426
Atomic radius (van der waals) (pm)	245	221
Boiling point (K)	3400	3675
Melting point (K)	1618	1936
Density (g/cm³)	13.51	9.84
Atomic number	96	71
Group name	Actinide	Lanthanide
Discovered (year)	1944	1907
Symbol	Cm	Lu