Table 1.

Physicochemical properties of calcium, strontium and barium (data adapted from [3,9,15,16,17]).

Element	Atomic Number	Relative Molar Mass (g/mol)	Melting Point (°C)	Ionic Radius (nm)	Hydrated Radius (nm)	Solubility (g/L)
						Hydroxide	Chloride	Carbonate	Sulfate
Calcium	20	40.08	842	0.100	0.412	1.31	813.85	0.013	1.11
Strontium	38	87.62	777	0.125	0.412	10.45	554.82	0.006	0.114
Barium	56	137.33	727	0.136	0.404	46.64	372.50	0.009	0.003