Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Li Lithium | Fr Francium |
|---|---|---|
| Atomic Number | 3 lower | 87 lower |
| Symbol | Li different | Fr different |
| Name | Lithium different | Francium different |
| Atomic Mass | 7 lower | 223.0197 lower |
| Category | Alkali Metals same value | Alkali Metals same value |
| Period | 2 lower | 7 lower |
| 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 | 0.98 higher | 0.7 higher |
| Atomic Radius | 182 lower | 348 lower |
| Ionization Energy | 5.392 higher | 3.9 higher |
| Electron Affinity | 0.618 higher | 0.47 higher |
| Oxidation States | +1 same value | +1 same value |
| Melting Point | 453.65 K (180.5 °C) higher | 300 K (26.85 °C) higher |
| Boiling Point | 1615 K (1341.85 °C) no data | — no data |
| Density | 0.534 no data | — no data |
| Electron Configuration | [He]2s1 different | [Rn]7s1 different |
| Year Discovered | 1817 different | 1939 different |
higher lower
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