Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Al Aluminum | Mg Magnesium |
|---|---|---|
| Atomic Number | 13 higher | 12 higher |
| Symbol | Al different | Mg different |
| Name | Aluminum different | Magnesium different |
| Atomic Mass | 26.9815 higher | 24.305 higher |
| Category | Post-transition Metals different | Alkaline Earth Metals different |
| Period | 3 same value | 3 same value |
| Group | 13 higher | 2 higher |
| Block | p-Block different | s-Block different |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 1.61 higher | 1.31 higher |
| Atomic Radius | 184 higher | 173 higher |
| Ionization Energy | 5.986 lower | 7.646 lower |
| Electron Affinity | 0.441 no data | — no data |
| Oxidation States | +3 different | +2 different |
| Melting Point | 933.437 K (660.29 °C) higher | 923 K (649.85 °C) higher |
| Boiling Point | 2792 K (2518.85 °C) higher | 1363 K (1089.85 °C) higher |
| Density | 2.7 higher | 1.74 higher |
| Electron Configuration | [Ne]3s2 3p1 different | [Ne]3s2 different |
| Year Discovered | Ancient different | 1808 different |
higher lower
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