Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Fr Francium | Db Dubnium |
|---|---|---|
| Atomic Number | 87 lower | 105 lower |
| Symbol | Fr different | Db different |
| Name | Francium different | Dubnium different |
| Atomic Mass | 223.0197 lower | 268.126 lower |
| Category | Alkali Metals different | Transition Metals different |
| Period | 7 same value | 7 same value |
| Group | 1 lower | 5 lower |
| Block | s-Block different | d-Block different |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 0.7 no data | — no data |
| Atomic Radius | 348 no data | — no data |
| Ionization Energy | 3.9 no data | — no data |
| Electron Affinity | 0.47 no data | — no data |
| Oxidation States | +1 different | 5, 4, 3 different |
| Melting Point | 300 K (26.85 °C) no data | — no data |
| Boiling Point | — no data | — no data |
| Density | — no data | — no data |
| Electron Configuration | [Rn]7s1 different | [Rn]7s2 5f14 6d3 different |
| Year Discovered | 1939 different | 1967 different |
higher lower
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