Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | B Boron | Be Beryllium |
|---|---|---|
| Atomic Number | 5 higher | 4 higher |
| Symbol | B different | Be different |
| Name | Boron different | Beryllium different |
| Atomic Mass | 10.81 higher | 9.0122 higher |
| Category | Metalloids different | Alkaline Earth Metals different |
| Period | 2 same value | 2 same value |
| Group | 13 higher | 2 higher |
| Block | p-Block different | s-Block different |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 2.04 higher | 1.57 higher |
| Atomic Radius | 192 higher | 153 higher |
| Ionization Energy | 8.298 lower | 9.323 lower |
| Electron Affinity | 0.277 no data | — no data |
| Oxidation States | +3 different | +2 different |
| Melting Point | 2348 K (2074.85 °C) higher | 1560 K (1286.85 °C) higher |
| Boiling Point | 4273 K (3999.85 °C) higher | 2744 K (2470.85 °C) higher |
| Density | 2.37 higher | 1.85 higher |
| Electron Configuration | [He]2s2 2p1 different | [He]2s2 different |
| Year Discovered | 1808 different | 1798 different |
higher lower
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