Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Sr Strontium | Ca Calcium |
|---|---|---|
| Atomic Number | 38 higher | 20 higher |
| Symbol | Sr different | Ca different |
| Name | Strontium different | Calcium different |
| Atomic Mass | 87.62 higher | 40.08 higher |
| Category | Alkaline Earth Metals same value | Alkaline Earth Metals same value |
| Period | 5 higher | 4 higher |
| 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 | 0.95 lower | 1 lower |
| Atomic Radius | 249 higher | 231 higher |
| Ionization Energy | 5.695 lower | 6.113 lower |
| Electron Affinity | — no data | — no data |
| Oxidation States | +2 same value | +2 same value |
| Melting Point | 1050 K (776.85 °C) lower | 1115 K (841.85 °C) lower |
| Boiling Point | 1655 K (1381.85 °C) lower | 1757 K (1483.85 °C) lower |
| Density | 2.64 higher | 1.54 higher |
| Electron Configuration | [Kr]5s2 different | [Ar]4s2 different |
| Year Discovered | 1790 different | Ancient different |
higher lower
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