Magnesium

12 sodium ← magnesium → aluminium Be ↑ Mg ↓ Ca periodic table General Name, Symbol, Number magnesium, Mg, 12 Chemical series alkaline earth metals Group, Period, Block 2, 3, s Appearance silvery white Atomic mass 24.3050(6) g/mol Electron configuration [Ne] 3s2 Electrons per shell 2, 8, 2 Physical properties Phase solid Density (near r.t.) 1.738 g·cm−3 Liquid density at m.p. 1.584 g·cm−3 Melting point 923 K (650 °C, 1202&# ...