Table 3: A comparison of the physical properties of metallic Al with those of its common competitors in biological systems [89]. Crystal ionic radius source: [92]. Magnetic susceptibilities source: [47, pp. 4-131 to 4-136]. Viscosity coefficient source: [93]. Standard molar electrostriction volume source [94].

MgAlCaMnFeCoZn

Atomic number12132024252730
Electron configurationNe3s2Ne3s23p1Ar4s2Ar4s23d5Ar4s23d6Ar4s23d7Ar4s23d10
Ionization energies (kJ/mol)737.7 
1450.7 
577.5 
1816.7 
2744.8  
589.8 
1145.4 
717.3 
1509 
762.6 
1561.9 
760.4 
1648 
906.4 
1733.3 
Crystal ionic radius (pm)8667.5114979213588
Electron affinity (kJ/mol)042.52.37015.763.70
Electronegativity (eV)1.311.611.01.551.831.881.65
Magnetic susceptibility 
(/10−6 cm3 mol−1)
+13.1+16.5+40+511Ferro-magnetic Ferro magnetic −9.15
Charge density (coulombs·mm−1)120.1372.651.6143.798.1154.9112.1
Viscosity Coefficient 
(dm3 mol−1, 298.15 K)
0.3850.750.2890.3900.420.3760.361
Standard molar electrostriction volume ()/(cm3 mol−1)52.559.338.530.738.5