Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Se Selenium | Te Tellurium |
|---|---|---|
| Atomic Number | 34 lower | 52 lower |
| Symbol | Se different | Te different |
| Name | Selenium different | Tellurium different |
| Atomic Mass | 78.97 lower | 127.6 lower |
| Category | Reactive Nonmetals different | Metalloids different |
| Period | 4 lower | 5 lower |
| 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 higher | 2.1 higher |
| Atomic Radius | 190 lower | 206 lower |
| Ionization Energy | 9.752 higher | 9.01 higher |
| Electron Affinity | 2.021 higher | 1.971 higher |
| Oxidation States | +6, +4, -2 same value | +6, +4, -2 same value |
| Melting Point | 493.65 K (220.5 °C) lower | 722.66 K (449.51 °C) lower |
| Boiling Point | 958 K (684.85 °C) lower | 1261 K (987.85 °C) lower |
| Density | 4.809 lower | 6.232 lower |
| Electron Configuration | [Ar]4s2 3d10 4p4 different | [Kr]5s2 4d10 5p4 different |
| Year Discovered | 1817 different | 1782 different |
higher lower
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