Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Tl Thallium | B Boron |
|---|---|---|
| Atomic Number | 81 higher | 5 higher |
| Symbol | Tl different | B different |
| Name | Thallium different | Boron different |
| Atomic Mass | 204.383 higher | 10.81 higher |
| Category | Post-transition Metals different | Metalloids different |
| Period | 6 higher | 2 higher |
| Group | 13 same value | 13 same value |
| Block | p-Block same value | p-Block same value |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 1.62 lower | 2.04 lower |
| Atomic Radius | 196 higher | 192 higher |
| Ionization Energy | 6.108 lower | 8.298 lower |
| Electron Affinity | 0.2 lower | 0.277 lower |
| Oxidation States | +3, +1 different | +3 different |
| Melting Point | 577 K (303.85 °C) lower | 2348 K (2074.85 °C) lower |
| Boiling Point | 1746 K (1472.85 °C) lower | 4273 K (3999.85 °C) lower |
| Density | 11.8 higher | 2.37 higher |
| Electron Configuration | [Xe]6s2 4f14 5d10 6p1 different | [He]2s2 2p1 different |
| Year Discovered | 1861 different | 1808 different |
higher lower
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