Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Fe Iron | O Oxygen |
|---|---|---|
| Atomic Number | 26 higher | 8 higher |
| Symbol | Fe different | O different |
| Name | Iron different | Oxygen different |
| Atomic Mass | 55.84 higher | 15.999 higher |
| Category | Transition Metals different | Reactive Nonmetals different |
| Period | 4 higher | 2 higher |
| Group | 8 lower | 16 lower |
| Block | d-Block different | p-Block different |
| Standard State | Solid different | Gas different |
| Electronegativity | 1.83 lower | 3.44 lower |
| Atomic Radius | 194 higher | 152 higher |
| Ionization Energy | 7.902 lower | 13.618 lower |
| Electron Affinity | 0.163 lower | 1.461 lower |
| Oxidation States | +3, +2 different | -2 different |
| Melting Point | 1811 K (1537.85 °C) higher | 54.36 K (-218.79 °C) higher |
| Boiling Point | 3134 K (2860.85 °C) higher | 90.2 K (-182.95 °C) higher |
| Density | 7.874 higher | 0.0014 higher |
| Electron Configuration | [Ar]4s2 3d6 different | [He]2s2 2p4 different |
| Year Discovered | Ancient different | 1774 different |
higher lower
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