Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Pm Promethium | Y Yttrium |
|---|---|---|
| Atomic Number | 61 higher | 39 higher |
| Symbol | Pm different | Y different |
| Name | Promethium different | Yttrium different |
| Atomic Mass | 144.9128 higher | 88.9058 higher |
| Category | Lanthanides different | Transition Metals different |
| Period | 6 higher | 5 higher |
| Group | 3 same value | 3 same value |
| Block | f-Block different | d-Block different |
| Standard State | Solid same value | Solid same value |
| Electronegativity | — no data | 1.22 no data |
| Atomic Radius | 236 higher | 219 higher |
| Ionization Energy | 5.55 lower | 6.217 lower |
| Electron Affinity | — no data | 0.307 no data |
| Oxidation States | +3 same value | +3 same value |
| Melting Point | 1315 K (1041.85 °C) lower | 1795 K (1521.85 °C) lower |
| Boiling Point | 3273 K (2999.85 °C) lower | 3618 K (3344.85 °C) lower |
| Density | 7.26 higher | 4.47 higher |
| Electron Configuration | [Xe]6s2 4f5 different | [Kr]5s2 4d1 different |
| Year Discovered | 1945 different | 1794 different |
higher lower
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