Comparison of Zinc and Radium

Attribute	Radium ×	Zinc ×
Standard state	Solid	Solid
Electron configuration	[Rn]7s²	[Ar]4s²3d¹⁰
Atomic mass (u)	226.02541	65.4
Electronegativity (pauling scale)	0.9	1.65
Oxidation states	+2	+2
Ionization energy (eV)	5.279	9.394
Atomic radius (van der waals) (pm)	283	139
Boiling point (K)	1413	1180
Melting point (K)	973	692.68
Density (g/cm³)	5	7.134
Atomic number	88	30
Group name	Alkaline earth metal	Transition metal
Discovered (year)	1898	1746
Symbol	Ra	Zn