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