Compare Elements
Compare two chemical elements side by side across 19 atomic and physical properties.
| Property | Ca Calcium | Fe Iron |
|---|---|---|
| Atomic Number | 20 lower | 26 lower |
| Symbol | Ca different | Fe different |
| Name | Calcium different | Iron different |
| Atomic Mass | 40.08 lower | 55.84 lower |
| Category | Alkaline Earth Metals different | Transition Metals different |
| Period | 4 same value | 4 same value |
| Group | 2 lower | 8 lower |
| Block | s-Block different | d-Block different |
| Standard State | Solid same value | Solid same value |
| Electronegativity | 1 lower | 1.83 lower |
| Atomic Radius | 231 higher | 194 higher |
| Ionization Energy | 6.113 lower | 7.902 lower |
| Electron Affinity | — no data | 0.163 no data |
| Oxidation States | +2 different | +3, +2 different |
| Melting Point | 1115 K (841.85 °C) lower | 1811 K (1537.85 °C) lower |
| Boiling Point | 1757 K (1483.85 °C) lower | 3134 K (2860.85 °C) lower |
| Density | 1.54 lower | 7.874 lower |
| Electron Configuration | [Ar]4s2 different | [Ar]4s2 3d6 different |
| Year Discovered | Ancient same value | Ancient same value |
higher lower
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