Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Tl Thallium | In Indium |
|---|---|---|
| Atomic Number | 81 higher | 49 higher |
| Symbol | Tl different | In different |
| Name | Thallium different | Indium different |
| Atomic Mass | 204.383 higher | 114.818 higher |
| Category | Post-transition Metals same value | Post-transition Metals same value |
| Period | 6 higher | 5 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 | 1.78 lower |
| Atomic Radius | 196 higher | 193 higher |
| Ionization Energy | 6.108 higher | 5.786 higher |
| Electron Affinity | 0.2 lower | 0.3 lower |
| Oxidation States | +3, +1 different | +3 different |
| Melting Point | 577 K (303.85 °C) higher | 429.75 K (156.6 °C) higher |
| Boiling Point | 1746 K (1472.85 °C) lower | 2345 K (2071.85 °C) lower |
| Density | 11.8 higher | 7.31 higher |
| Electron Configuration | [Xe]6s2 4f14 5d10 6p1 different | [Kr]5s2 4d10 5p1 different |
| Year Discovered | 1861 different | 1863 different |
higher lower
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