Mg
Magnesium
Z 12 24.305 g/molAlkaline Earth Metal
Nucleus
12 Protons
12 Neutrons
12 Electrons (2 Valence)
Shell distribution: K2 • L8 • M2 • N0 • O0 • P0 • Q0
Electron Configuration
Energy
7p
6d
5f
7s
6p
5d
4f
6s
5p
4d
5s
4p
3d
4s
3p
3s
2p
2s
1s
[Ne]3s2
Radii
Empirical
150 pm1.5 Å
Calculated
145 pm1.45 Å
Covalent
141±7 pm1.41±0.07 Å
van Der Waals
173 pm1.73 Å
Oxidation States
CommonRare
0
0
+1
+2
Crystal Structure
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Hexagonal close-packed