Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Tl Thallium | Ba Barium |
|---|---|---|
| Atomic Number | 81 higher | 56 higher |
| Symbol | Tl different | Ba different |
| Name | Thallium different | Barium different |
| Atomic Mass | 204.383 higher | 137.33 higher |
| Category | Post-transition Metals different | Alkaline Earth Metals different |
| Period | 6 same value | 6 same value |
| Group | 13 higher | 2 higher |
| Block | p-Block different | s-Block different |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 1.62 higher | 0.89 higher |
| Atomic Radius | 196 lower | 268 lower |
| Ionization Energy | 6.108 higher | 5.212 higher |
| Electron Affinity | 0.2 no data | — no data |
| Oxidation States | +3, +1 different | +2 different |
| Melting Point | 577 K (303.85 °C) lower | 1000 K (726.85 °C) lower |
| Boiling Point | 1746 K (1472.85 °C) lower | 2170 K (1896.85 °C) lower |
| Density | 11.8 higher | 3.62 higher |
| Electron Configuration | [Xe]6s2 4f14 5d10 6p1 different | [Xe]6s2 different |
| Year Discovered | 1861 different | 1808 different |
higher lower
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