83
208.98
Bi
Bismuth
Identification
CAS Number: 7440-69-9
Discoverer: Known to the ancients.
Properties
Atomic Dimensions
Atomic Radius: 160 pm →
Atomic Radius (Rahm): 250 pm
Covalent Radius: 148 pm →Van der Waals Radius: 206.99999999999997 pm
Metallic Radius: 151 pm
Atomic Volume: 21.3 cm³/mol
Lattice Constant: 4.75 Å
Thermodynamics
Electronic Structure
Electron Config: [Xe] 4f14 5d10 6s2 6p3
Block: p
Period: 6 →Group: 15 →Electronegativity: 1.9 →Electron Affinity: 0.942362 eV →Oxidation States: +3, +5
Abundance & Geochemistry
Crust Abundance: 0.0085 mg/kg
Sea Abundance: 0.00002 mg/L
Goldschmidt Class: chalcophile
About
White crystalline metal with a pink tinge, belongs to group 15. Most diamagnetic of all metals and has the lowest thermal conductivity of all the elements except mercury. Lead-free bismuth compounds are used in cosmetics and medical procedures. Burns in the air and produces a blue flame. In 1753, C.G. Junine first demonstrated that it was different from lead.
Isotopes
Bi-209 209 100.00%
