83 Bi 208.980401

Bismuth

POST-TRANSITION METAL

Phase: Solid

Discovered: Claude François Geoffroy

Block: P

Summary

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.

Appearance: lustrous silver

Source: Wikipedia

Physical Properties

Atomic Mass 208.980401 u

Density 9.78 g/cm³

Melting Point 544.7 K

Boiling Point 1837 K

Molar Heat 25.52 J/(mol·K)

Electron Affinity 90.924 kJ/mol

Ionization Energies

1^st: 703 kJ/mol

2^nd: 1610 kJ/mol

3^rd: 2466 kJ/mol

4^th: 4370 kJ/mol

5^th: 5400 kJ/mol

6^th: 8520 kJ/mol