Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Fe Iron | K Potassium |
|---|---|---|
| Atomic Number | 26 higher | 19 higher |
| Symbol | Fe different | K different |
| Name | Iron different | Potassium different |
| Atomic Mass | 55.84 higher | 39.0983 higher |
| Category | Transition Metals different | Alkali Metals different |
| Period | 4 same value | 4 same value |
| Group | 8 higher | 1 higher |
| Block | d-Block different | s-Block different |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 1.83 higher | 0.82 higher |
| Atomic Radius | 194 lower | 275 lower |
| Ionization Energy | 7.902 higher | 4.341 higher |
| Electron Affinity | 0.163 lower | 0.501 lower |
| Oxidation States | +3, +2 different | +1 different |
| Melting Point | 1811 K (1537.85 °C) higher | 336.53 K (63.38 °C) higher |
| Boiling Point | 3134 K (2860.85 °C) higher | 1032 K (758.85 °C) higher |
| Density | 7.874 higher | 0.89 higher |
| Electron Configuration | [Ar]4s2 3d6 different | [Ar]4s1 different |
| Year Discovered | Ancient different | 1807 different |
higher lower
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