Magnesium (Mg) — Element 12: Properties & Data | Aladdin Scientific
Magnesium(Mg) — Element 12
Magnesium (Mg) is a alkaline earth metal with atomic number 12 and atomic mass 24.305. It has melting point 923 K (650 °C), boiling point 1363 K (1090 °C), density 1.74 g/cm³. It sits in group 2 and period 3 of the periodic table and was discovered in 1808.
Key facts
| Atomic mass | 24.3050 u |
|---|---|
| Electron configuration | [Ne]3s2 |
| Oxidation states | +2 |
| Electronegativity (Pauling) | 1.31 |
| Atomic radius (van der Waals) | 173 pm |
| Ionization energy | 7.646 eV |
| Melting point | 923 K |
| Boiling point | 1363 K |
| Density | 1.74 g/cm³ |
| Standard state | Solid |
| Year discovered | 1808 |
Frequently asked questions
What is the electron configuration of magnesium?
The ground-state electron configuration of magnesium is [Ne]3s2.
What group and period is magnesium in?
Magnesium (Mg) is in group 2 and period 3 of the periodic table, classified as a alkaline earth metal.
What is the melting point of magnesium?
Magnesium melts at 923 K (650 °C).
What is the standard state of magnesium?
Magnesium is a solid at standard temperature and pressure.
Related elements
About this data: property values compiled from IUPAC Standard Atomic Weights (2021), the NIST Atomic Spectra Database, and PubChem. Curated by the Aladdin Scientific technical team. Last reviewed: .