Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Ra Radium | Sr Strontium |
|---|---|---|
| Atomic Number | 88 higher | 38 higher |
| Symbol | Ra different | Sr different |
| Name | Radium different | Strontium different |
| Atomic Mass | 226.0254 higher | 87.62 higher |
| Category | Alkaline Earth Metals same value | Alkaline Earth Metals same value |
| Period | 7 higher | 5 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 | 0.9 lower | 0.95 lower |
| Atomic Radius | 283 higher | 249 higher |
| Ionization Energy | 5.279 lower | 5.695 lower |
| Electron Affinity | — no data | — no data |
| Oxidation States | +2 same value | +2 same value |
| Melting Point | 973 K (699.85 °C) lower | 1050 K (776.85 °C) lower |
| Boiling Point | 1413 K (1139.85 °C) lower | 1655 K (1381.85 °C) lower |
| Density | 5 higher | 2.64 higher |
| Electron Configuration | [Rn]7s2 different | [Kr]5s2 different |
| Year Discovered | 1898 different | 1790 different |
higher lower
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