Comparison of Europium and Americium

Attribute	Americium ×	Europium ×
Electronegativity (pauling scale)	1.3	-
Atomic mass (u)	243.06138	151.964
Standard state	Solid	Solid
Oxidation states	+3 +4 +5 +6	+2 +3
Electron configuration	[Rn]7s²5f⁷	[Xe]6s²4f⁷
Ionization energy (eV)	5.993	5.67
Atomic radius (van der waals) (pm)	244	233
Boiling point (K)	2284	1802
Melting point (K)	1449	1095
Density (g/cm³)	13.69	5.24
Atomic number	95	63
Group name	Actinide	Lanthanide
Discovered (year)	1944	1901
Symbol	Am	Eu