Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Se Selenium | S Sulfur |
|---|---|---|
| Atomic Number | 34 higher | 16 higher |
| Symbol | Se different | S different |
| Name | Selenium different | Sulfur different |
| Atomic Mass | 78.97 higher | 32.07 higher |
| Category | Reactive Nonmetals same value | Reactive Nonmetals same value |
| Period | 4 higher | 3 higher |
| Group | 16 same value | 16 same value |
| Block | p-Block same value | p-Block same value |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 2.55 lower | 2.58 lower |
| Atomic Radius | 190 higher | 180 higher |
| Ionization Energy | 9.752 lower | 10.36 lower |
| Electron Affinity | 2.021 lower | 2.077 lower |
| Oxidation States | +6, +4, -2 same value | +6, +4, -2 same value |
| Melting Point | 493.65 K (220.5 °C) higher | 388.36 K (115.21 °C) higher |
| Boiling Point | 958 K (684.85 °C) higher | 717.75 K (444.6 °C) higher |
| Density | 4.809 higher | 2.067 higher |
| Electron Configuration | [Ar]4s2 3d10 4p4 different | [Ne]3s2 3p4 different |
| Year Discovered | 1817 different | Ancient different |
higher lower
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