83Bi208.98
Bismuth (Bi)
Element 83 · Post-transition metal
Bismuth (Bi) is a chemical element with atomic number 83. It is classified as a post-transition metal in period 6, group 15 of the periodic table (the p-block). Its standard atomic weight is 208.98 u and its ground-state electron configuration is [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p³.
Bismuth facts
| Atomic number (Z) | 83 |
|---|---|
| Symbol | Bi |
| Standard atomic weight | 208.98 u |
| Category | Post-transition metal |
| Group | 15 |
| Period | 6 |
| Block | p-block |
| Electron configuration | [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p³ |
| Electronegativity (Pauling) | 2.02 |
| State at 20 °C | Solid |
| Protons / electrons | 83 / 83 |
| Neutrons (most common isotope, approx.) | 126 |
| Molar mass | 208.98 g/mol |