Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Li Lithium | Be Beryllium |
|---|---|---|
| Atomic Number | 3 lower | 4 lower |
| Symbol | Li different | Be different |
| Name | Lithium different | Beryllium different |
| Atomic Mass | 7 lower | 9.0122 lower |
| Category | Alkali Metals different | Alkaline Earth Metals different |
| Period | 2 same value | 2 same value |
| Group | 1 lower | 2 lower |
| Block | s-Block same value | s-Block same value |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 0.98 lower | 1.57 lower |
| Atomic Radius | 182 higher | 153 higher |
| Ionization Energy | 5.392 lower | 9.323 lower |
| Electron Affinity | 0.618 no data | — no data |
| Oxidation States | +1 different | +2 different |
| Melting Point | 453.65 K (180.5 °C) lower | 1560 K (1286.85 °C) lower |
| Boiling Point | 1615 K (1341.85 °C) lower | 2744 K (2470.85 °C) lower |
| Density | 0.534 lower | 1.85 lower |
| Electron Configuration | [He]2s1 different | [He]2s2 different |
| Year Discovered | 1817 different | 1798 different |
higher lower
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