Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Kr Krypton | K Potassium |
|---|---|---|
| Atomic Number | 36 higher | 19 higher |
| Symbol | Kr different | K different |
| Name | Krypton different | Potassium different |
| Atomic Mass | 83.8 higher | 39.0983 higher |
| Category | Noble Gases different | Alkali Metals different |
| Period | 4 same value | 4 same value |
| Group | 18 higher | 1 higher |
| Block | p-Block different | s-Block different |
| Standard State | Gas different | Solid different |
| Electronegativity | 3 higher | 0.82 higher |
| Atomic Radius | 202 lower | 275 lower |
| Ionization Energy | 14 higher | 4.341 higher |
| Electron Affinity | — no data | 0.501 no data |
| Oxidation States | 0 different | +1 different |
| Melting Point | 115.79 K (-157.36 °C) lower | 336.53 K (63.38 °C) lower |
| Boiling Point | 119.93 K (-153.22 °C) lower | 1032 K (758.85 °C) lower |
| Density | 0.0037 lower | 0.89 lower |
| Electron Configuration | [Ar]4s2 3d10 4p6 different | [Ar]4s1 different |
| Year Discovered | 1898 different | 1807 different |
higher lower
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