Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Og Oganesson | He Helium |
|---|---|---|
| Atomic Number | 118 higher | 2 higher |
| Symbol | Og different | He different |
| Name | Oganesson different | Helium different |
| Atomic Mass | 295.216 higher | 4.0026 higher |
| Category | Noble Gases same value | Noble Gases same value |
| Period | 7 higher | 1 higher |
| Group | 18 same value | 18 same value |
| Block | p-Block same value | p-Block same value |
| Standard State | Expected to be a gas different | Gas different |
| Electronegativity | — no data | — no data |
| Atomic Radius | — no data | 140 no data |
| Ionization Energy | — no data | 24.587 no data |
| Electron Affinity | — no data | — no data |
| Oxidation States | +6, +4, +2, +1, 0, -1 different | 0 different |
| Melting Point | — no data | 0.95 K (-272.2 °C) no data |
| Boiling Point | — no data | 4.22 K (-268.93 °C) no data |
| Density | — no data | 0.0002 no data |
| Electron Configuration | [Rn]7s2 7p6 5f14 6d10 (predicted) different | 1s2 different |
| Year Discovered | 2006 different | 1868 different |
higher lower
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