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Periodic table / Other metals

83Bismuth

Bismuth is an other metal in group 15, period 6. At 25 °C it is a solid.

Bi
Shells: 2, 8, 18, 32, 18, 5. A simple picture: electrons do not move in circles.
Symbol
Bi
Atomic number
83 protons in the nucleus
Standard atomic weight
208.98 ± 0.01
Electron configuration
[Xe] 4f14 5d10 6s2 6p3
Electrons in each shell
2, 8, 18, 32, 18, 5
Group, period, block
15, 6, p
Family
Other metals
State at 25 °C
solid
Electronegativity
2.02 (Pauling scale)
First ionisation energy
702.9 kJ/mol (7.285516 eV)
Where these numbers come from

Atomic weight: IUPAC CIAAW, abridged standard atomic weights 2024. Electron configuration and ionisation energy: NIST Atomic Spectra Database. Family, state and electronegativity: PubChem. See Sources. Melting points, boiling points and densities are left out for now: published values differ between sources, and we will add them once each has been checked.