Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Fr Francium | Na Sodium |
|---|---|---|
| Atomic Number | 87 higher | 11 higher |
| Symbol | Fr different | Na different |
| Name | Francium different | Sodium different |
| Atomic Mass | 223.0197 higher | 22.9898 higher |
| Category | Alkali Metals same value | Alkali Metals same value |
| Period | 7 higher | 3 higher |
| Group | 1 same value | 1 same value |
| Block | s-Block same value | s-Block same value |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 0.7 lower | 0.93 lower |
| Atomic Radius | 348 higher | 227 higher |
| Ionization Energy | 3.9 lower | 5.139 lower |
| Electron Affinity | 0.47 lower | 0.548 lower |
| Oxidation States | +1 same value | +1 same value |
| Melting Point | 300 K (26.85 °C) lower | 370.95 K (97.8 °C) lower |
| Boiling Point | — no data | 1156 K (882.85 °C) no data |
| Density | — no data | 0.97 no data |
| Electron Configuration | [Rn]7s1 different | [Ne]3s1 different |
| Year Discovered | 1939 different | 1807 different |
higher lower
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