Atomic Properties
- Atomic Number
- 12
- Atomic Mass
- 24.3050 u
- Electron Configuration
- [Ne] 3s2
- Electronegativity
- 1.31
- Block
- s-block
- Group
- 2
- Period
- 3
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 923.00 K
- Boiling Point
- 1363.00 K
- Density
- 1.7380 g/cm³
About Magnesium
Lightweight metal; burns with bright white flame; essential for life.
Isotopes of Magnesium
Magnesium has 3 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 24Mg | 24 | 23.9850417 | 78.99% | Stable |
| 25Mg | 25 | 24.98583698 | 10.00% | Stable |
| 26Mg | 26 | 25.98259297 | 11.01% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)