83 - Bismuth post-transition metal
Discovered by Claude François Geoffroy in 1753
- Atomic Radius (Å)
 
  
  
  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.
| Shell | Electrons | Orbitals | 
|---|---|---|
| 1 | 2 | 2 in 1s | 
| 2 | 8 | 2 in 2s + 6 in 2p | 
| 3 | 18 | 2 in 3s + 6 in 3p + 10 in 3d | 
| 4 | 32 | 2 in 4s + 6 in 4p + 10 in 4d + 14 in 4f | 
| 5 | 18 | 2 in 5s + 6 in 5p + 10 in 5d | 
| 6 | 5 | 2 in 6s + 3 in 6p | 
          208.98  u
        Atomic Mass
      
    
          1.6  Å
        Atomic Radius
      
    
          1837  K
        Boiling Point
      
    
          1.48  Å
        Covalent Radius
      
    
          9.78  g/cm³
        Density
      
    
          90.92
        Electron Affinity
      
    
          2.02
        Electronegativity
      
    
          7.29  eV
        First Ionization Energy
      
    
          544.67  K
        Melting Point
      
    
          6
        Number of Shells
      
    
          5
        Electron Valency
      
    
          83
        Atomic Number
      
    
          2, 8, 18, 32, 18, 5
        Electron Shell Occupations
      
    
          0.12  J/(g K)
        Specific Heat