Bismuth (Bi) » Innovachem

Isotope	Z(p)	N(n)	Atomic Mass	Natural Abundance	Nuclear Spin
Bi-209	83	126	208.980384	100.00%	9/2-

Name	Bismuth
Symbol	Bi
Atomic number	83
Atomic weight	208.98
Standard state	Solid at 298 °K
CAS Registry ID	7440-69-9
Group in periodic table	15
Group name	Pnictogen
Period in periodic table	6
Block in periodic table	p-block
Color	Lustrous reddish-white
Classification	Metallic
Melting point	271 °C
Boiling point	1560 °C
Vaporization point	1564 ºC
Thermal conductivity	8 W/(m·K)
Electrical resistivity	106.8 µΩ·cm at 0 °C
Electronegativity	1.67
Specific heat	122 J/(kg·K)
Heat of vaporization	160 kJ·mol^-1
Heat of fusion	10.9 kJ·mol^-1
Density of liquid	10.05 g/cm³ at 271 °C
Density of solid	9.79 g/cm³
Electron configuration	[Xe]4f¹⁴5d¹⁰6s²6p³
Atomic radius	1.88 Å (coordination number 12)
Atomic volume	21.3 cm³/g-atom
Ionic radii in crystals corresponding to coordination number 6	Bi³⁺: 1.03 Å; Bi⁵⁺: 0.76 Å
Ionization potentials	Bi(⁺³) 25.56 eV and Bi(⁺⁵) 56.0 eV
Electron affinity	0.946 eV
Oxidation states	+3, +5