Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | O Oxygen | Po Polonium |
|---|---|---|
| Atomic Number | 8 lower | 84 lower |
| Symbol | O different | Po different |
| Name | Oxygen different | Polonium different |
| Atomic Mass | 15.999 lower | 208.9824 lower |
| Category | Reactive Nonmetals different | Metalloids different |
| Period | 2 lower | 6 lower |
| Group | 16 same value | 16 same value |
| Block | p-Block same value | p-Block same value |
| Standard State | Gas different | Solid different |
| Electronegativity | 3.44 higher | 2 higher |
| Atomic Radius | 152 lower | 197 lower |
| Ionization Energy | 13.618 higher | 8.417 higher |
| Electron Affinity | 1.461 lower | 1.9 lower |
| Oxidation States | -2 different | +4, +2 different |
| Melting Point | 54.36 K (-218.79 °C) lower | 527 K (253.85 °C) lower |
| Boiling Point | 90.2 K (-182.95 °C) lower | 1235 K (961.85 °C) lower |
| Density | 0.0014 lower | 9.32 lower |
| Electron Configuration | [He]2s2 2p4 different | [Xe]6s2 4f14 5d10 6p4 different |
| Year Discovered | 1774 different | 1898 different |
higher lower
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