Bismuth (Bi)
Bismuth is the chemical element with atomic number 83 and symbol Bi. It is a post-transition metal in period 6, group 15, with a standard atomic weight of 208.98 u.
Key facts
- Z
- 83
- Atomic weight
- 208.98 u
- Category
- post-transition metal
- State at 298 K
- Solid
- Occurrence
- primordial
- Discovered
- —
- CAS
- 7440-69-9
Measured properties
| Property | Value | Source |
|---|---|---|
| Electronegativity | 2.02 | National Center for Biotechnology Information (NIH) |
| Melting point | 544.55 K | National Center for Biotechnology Information (NIH) |
| Boiling point | 1,837 K | National Center for Biotechnology Information (NIH) |
| Density stp | 9.807 g/cm³ | National Center for Biotechnology Information (NIH) |
| Atomic radius empirical | 207 pm | National Center for Biotechnology Information (NIH) |
| Ionization energy 1st | 703.3 kJ/mol | National Center for Biotechnology Information (NIH) |
| Electron affinity | 91.3 kJ/mol | National Center for Biotechnology Information (NIH) |
Electron configuration
- Noble gas notation
- [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p³
- Full notation
- 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p³
- Electrons per shell
- 2, 8, 18, 32, 18, 5