12
Mg
Magnesium
Magnesium
Magnesium (Mg)
Alkaline Earth Metals · Solid · Period 3 · Group 2
Advertisement
Element Properties
- Atomic Number
- 12
- Symbol
- Mg
- Atomic Mass
- 24.305
- Category
- Alkaline Earth Metals
- Standard State
- Solid
- Period
- 3
- Group
- 2
- Electronegativity
- 1.31
- Atomic Radius
- 173
- Ionization Energy
- 7.65
- Electron Affinity
- —
- Oxidation States
- +2
- Melting Point
- 923 K (649.85 °C)
- Boiling Point
- 1363 K (1089.85 °C)
- Density
- 1.74
- Electron Configuration
- [Ne]3s2
- Year Discovered
- 1808
Frequently asked questions
What is the atomic number of Magnesium?
The atomic number of Magnesium is 12, which equals the number of protons in its nucleus.
What is the atomic mass of Magnesium?
The atomic mass of Magnesium is approximately 24.305 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Magnesium?
The electron configuration of Magnesium is [Ne]3s2.
Where is Magnesium in the periodic table?
Magnesium is located in period 3, group 2.
When was Magnesium discovered?
Magnesium was discovered in 1808.
Related elements
Same group
4
Be
Beryllium
9.012
20
Ca
Calcium
40.08
38
Sr
Strontium
87.62
56
Ba
Barium
137.33
88
Ra
Radium
226.025