		Be		Mg		Ca		Sr		Ba
Occurence %		6x10^-4		2.1		3.6		0.02		0.03
Ionisation		895		734		587		541		500
energy	2	1746		1443		1059		959		~900
/ kJxmol^-1	3	14000		9700		4930		4170		3580
Hydration-		-2994		-1924		-1580		-1485		-1276
enthalpy/kJxmol^-1
Eo/V		-1.85		-2.37		-2.87		-2.87		-2.9
Ionic radius (r/Å)		0.31		0.65		0.99		1.13		1.35
Ion potential (q/r)		6.45		3.08		2.02		1.77		1.48
Ion mobility		4.8		5.5		6.2		6.2		6.6
/10⁸m²s^-1V^-1
Melting point/⁰C		1278		651		850		770		704
Atomic radius /Å		1.11		1.6		1.97		2.15		2.17
pLM(OH)₂		-		11		4.2		3.3		1.5
pL MCO₃				5		8.3		9		8.3
pL MC₂O₄				4.1		8.7		7.2		7
pL MSO₄				~0		5		6.5		10
logK MF⁺		4.95		1.82		0.63		0.15		-0.2
logK MEDTA				8.7		10.7		8.8		7.9
logK Mgly⁺				3.4		1.4		0.9		0.8
logK MP₂O₇^2-				5.8		5		4.7
logK MATP				4.2		4		3.5		3.3
C(plasma) /ppm		<4x10^-7		2.2		100		4x10^-2		~10^-2
C(erythrocyte)/ppm		<10^-4		61		6.5		4x10^-2		~10^-2