Cr
Chromium
Element 24 · Transition metal · Period 4, Group 6
Solid · Discovered 1797
Atomic Properties
| Atomic Number | 24 |
| Atomic Mass | 51.996u |
| Electron Configuration | [Ar]3d5 4s1 |
| Electronegativity | 1.66Pauling |
| Atomic Radius | 189pm |
| Ionization Energy | 6.767eV |
| Electron Affinity | 0.666eV |
| Oxidation States | +6, +3, +2 |
Physical Properties
| Standard State | Solid |
| Melting Point | 2180K |
| Boiling Point | 2944K |
| Density | 7.15g/cm³ |
| Group Block | Transition metal |
| Year Discovered | 1797 |