Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Hf Hafnium | Zr Zirconium |
|---|---|---|
| Atomic Number | 72 higher | 40 higher |
| Symbol | Hf different | Zr different |
| Name | Hafnium different | Zirconium different |
| Atomic Mass | 178.49 higher | 91.22 higher |
| Category | Transition Metals same value | Transition Metals same value |
| Period | 6 higher | 5 higher |
| Group | 4 same value | 4 same value |
| Block | d-Block same value | d-Block same value |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 1.3 lower | 1.33 lower |
| Atomic Radius | 212 higher | 186 higher |
| Ionization Energy | 6.825 higher | 6.634 higher |
| Electron Affinity | — no data | 0.426 no data |
| Oxidation States | +4 same value | +4 same value |
| Melting Point | 2506 K (2232.85 °C) higher | 2128 K (1854.85 °C) higher |
| Boiling Point | 4876 K (4602.85 °C) higher | 4682 K (4408.85 °C) higher |
| Density | 13.3 higher | 6.52 higher |
| Electron Configuration | [Xe]6s2 4f14 5d2 different | [Kr]5s2 4d2 different |
| Year Discovered | 1923 different | 1789 different |
higher lower
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