83Bi208.98040
Bismuth
Post-Transition Metal
Solid at STP
Period 6Group 15Block PDiscovered 1753
[Xe]6s2 4f14 5d10 6p3
Bismuth is a chemical element with symbol Bi and atomic number 83. Bismuth, a pentavalent post-transition metal, chemically resembles arsenic and antimony. Elemental bismuth may occur naturally, although its sulfide and oxide form important commercial ores.
📖 Read more on Wikipedia →Atomic Properties
| Atomic Number | 83 |
| Atomic Mass | 208.98040 u |
| Electron Configuration | [Xe]6s2 4f14 5d10 6p3 |
| Oxidation States | +5, +3 |
| Electronegativity | 2.02 (Pauling) |
| Atomic Radius | 207 pm |
| Ionization Energy | 7.289 eV |
| Electron Affinity | 0.946 eV |
| Block | P |
Physical Properties
| Appearance | lustrous silver |
| Standard State | Solid |
| Melting Point | 544.55 K (271.4 °C) |
| Boiling Point | 1837 K (1563.8 °C) |
| Density | 9.807 g/cm³ |
| Molar Heat | 25.52 J/(mol·K) |
| CPK Color | #9E4FB5 |
Classification
| Category | Post-Transition Metal |
| Group Block | Post-transition metal |
| Period | 6 |
| Group | 15 |
| Block | P |
Discovery
| Year Discovered | 1753 |
| Discovered By | Claude François Geoffroy |
| Electron Shells | 2, 8, 18, 32, 18, 5 |