Early Element Triads
Identifies groups of three chemically similar elements whose atomic weights show numerical relationships, providing an early indication of periodic behaviour.
Historical biography archive · Updated 2026-11-03
Johann Wolfgang Dobereiner Biography and Timeline
Follow Johann Wolfgang Dobereiner through 2 dated historical records for Germany.
Johann Wolfgang Dobereiner, historical timeline
A chronological timeline drawn from matching World History Database records.
2Distinct records
1 of 1Page
1817–1829Years on this page
1817
1829
Law of Triads
Publishes a more developed account of elemental triads and shows that the middle member often has an atomic weight close to the average of the other two.
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.