Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Ce Cerium | Os Osmium |
|---|---|---|
| Atomic Number | 58 lower | 76 lower |
| Symbol | Ce different | Os different |
| Name | Cerium different | Osmium different |
| Atomic Mass | 140.116 lower | 190.2 lower |
| Category | Lanthanides different | Transition Metals different |
| Period | 6 same value | 6 same value |
| Group | 3 lower | 8 lower |
| Block | f-Block different | d-Block different |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 1.12 lower | 2.2 lower |
| Atomic Radius | 235 higher | 216 higher |
| Ionization Energy | 5.539 lower | 8.7 lower |
| Electron Affinity | 0.5 lower | 1.1 lower |
| Oxidation States | +4, +3 same value | +4, +3 same value |
| Melting Point | 1071 K (797.85 °C) lower | 3306 K (3032.85 °C) lower |
| Boiling Point | 3697 K (3423.85 °C) lower | 5285 K (5011.85 °C) lower |
| Density | 6.77 lower | 22.57 lower |
| Electron Configuration | [Xe]6s2 4f1 5d1 different | [Xe]6s2 4f14 5d6 different |
| Year Discovered | 1803 same value | 1803 same value |
higher lower
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