Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Mg Magnesium | Na Sodium |
|---|---|---|
| Atomic Number | 12 higher | 11 higher |
| Symbol | Mg different | Na different |
| Name | Magnesium different | Sodium different |
| Atomic Mass | 24.305 higher | 22.9898 higher |
| Category | Alkaline Earth Metals different | Alkali Metals different |
| Period | 3 same value | 3 same value |
| Group | 2 higher | 1 higher |
| Block | s-Block same value | s-Block same value |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 1.31 higher | 0.93 higher |
| Atomic Radius | 173 lower | 227 lower |
| Ionization Energy | 7.646 higher | 5.139 higher |
| Electron Affinity | — no data | 0.548 no data |
| Oxidation States | +2 different | +1 different |
| Melting Point | 923 K (649.85 °C) higher | 370.95 K (97.8 °C) higher |
| Boiling Point | 1363 K (1089.85 °C) higher | 1156 K (882.85 °C) higher |
| Density | 1.74 higher | 0.97 higher |
| Electron Configuration | [Ne]3s2 different | [Ne]3s1 different |
| Year Discovered | 1808 different | 1807 different |
higher lower
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