Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Th Thorium | Pr Praseodymium |
|---|---|---|
| Atomic Number | 90 higher | 59 higher |
| Symbol | Th different | Pr different |
| Name | Thorium different | Praseodymium different |
| Atomic Mass | 232.038 higher | 140.9077 higher |
| Category | Actinides different | Lanthanides different |
| Period | 7 higher | 6 higher |
| Group | 3 same value | 3 same value |
| Block | f-Block same value | f-Block same value |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 1.3 higher | 1.13 higher |
| Atomic Radius | 237 lower | 239 lower |
| Ionization Energy | 6.08 higher | 5.464 higher |
| Electron Affinity | — no data | — no data |
| Oxidation States | +4 different | +3 different |
| Melting Point | 2023 K (1749.85 °C) higher | 1204 K (930.85 °C) higher |
| Boiling Point | 5061 K (4787.85 °C) higher | 3793 K (3519.85 °C) higher |
| Density | 11.72 higher | 6.77 higher |
| Electron Configuration | [Rn]7s2 6d2 different | [Xe]6s2 4f3 different |
| Year Discovered | 1828 different | 1885 different |
higher lower
Advertisement