Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Na Sodium | Ar Argon |
|---|---|---|
| Atomic Number | 11 lower | 18 lower |
| Symbol | Na different | Ar different |
| Name | Sodium different | Argon different |
| Atomic Mass | 22.9898 lower | 39.9 lower |
| Category | Alkali Metals different | Noble Gases different |
| Period | 3 same value | 3 same value |
| Group | 1 lower | 18 lower |
| Block | s-Block different | p-Block different |
| Standard State | Solid different | Gas different |
| Electronegativity | 0.93 no data | — no data |
| Atomic Radius | 227 higher | 188 higher |
| Ionization Energy | 5.139 lower | 15.76 lower |
| Electron Affinity | 0.548 no data | — no data |
| Oxidation States | +1 different | 0 different |
| Melting Point | 370.95 K (97.8 °C) higher | 83.8 K (-189.35 °C) higher |
| Boiling Point | 1156 K (882.85 °C) higher | 87.3 K (-185.85 °C) higher |
| Density | 0.97 higher | 0.0018 higher |
| Electron Configuration | [Ne]3s1 different | [Ne]3s2 3p6 different |
| Year Discovered | 1807 different | 1894 different |
higher lower
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