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