Compare chemical elements

	Radium ✕
Symbol	Ra
Atomic number	88
Chemical property	Alkaline earth metal
Origin o the name	the Latin radius, 'ray'
Group	2
Period	7
Density (g/cm³)	5.5
Melting point (K)	973
Boiling point (K)	2010
Heat capacity (J/(g·K))	0.094
Electro-negativity	0.9
Abundance in earth's crust (mg/kg)	0.000001