← Back to periodic table
Magnesium (Mg)
Atomic number: 12 · Category: alkaline earth metal · Group 2 · Period 3 · Phase: Solid
Magnesium is a chemical element with symbol Mg and atomic number 12. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (Group 2, or alkaline earth metals) of the periodic table:they each have the same electron configuration in their outer electron shell producing a similar crystal structure. Magnesium is the ninth most abundant element in the universe.
Atomic mass: 24.305
Density: 1.738
Melting point: 923 K
Boiling point: 1363 K
Appearance: shiny grey solid
Source: Wikipedia
Block: s
Molar heat: 24.869
CPK color:#8aff00
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2
Configuration (semantic): [Ne] 3s2
Shells: 2, 8, 2
Electronegativity (Pauling): 1.31
Electron affinity: -40
Ionization energies: 737.7, 1450.7, 7732.7, 10542.5, 13630, 18020, 21711, 25661, 31653, 35458, 169988, 189368
Periodic position
Group: 2
Period: 3
xpos: 2
ypos: 3
Spectral/Bohr images
Image
3D Model