Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Mg Magnesium | Ca Calcium |
|---|---|---|
| Atomic Number | 12 lower | 20 lower |
| Symbol | Mg different | Ca different |
| Name | Magnesium different | Calcium different |
| Atomic Mass | 24.305 lower | 40.08 lower |
| Category | Alkaline Earth Metals same value | Alkaline Earth Metals same value |
| Period | 3 lower | 4 lower |
| Group | 2 same value | 2 same value |
| Block | s-Block same value | s-Block same value |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 1.31 higher | 1 higher |
| Atomic Radius | 173 lower | 231 lower |
| Ionization Energy | 7.646 higher | 6.113 higher |
| Electron Affinity | — no data | — no data |
| Oxidation States | +2 same value | +2 same value |
| Melting Point | 923 K (649.85 °C) lower | 1115 K (841.85 °C) lower |
| Boiling Point | 1363 K (1089.85 °C) lower | 1757 K (1483.85 °C) lower |
| Density | 1.74 higher | 1.54 higher |
| Electron Configuration | [Ne]3s2 different | [Ar]4s2 different |
| Year Discovered | 1808 different | Ancient different |
higher lower
Advertisement