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