View source for Glenn T. Seaborg

{{Infobox person
| name = Glenn T. Seaborg
| born = 19 April 1912
| died = 25 February 1999
| nationality = American
| occupation = Chemist; physicist
| known_for = Transuranium elements; nuclear chemistry; actinide concept
| notable_work = Discovery of plutonium; actinide series formulation
}}


'''Glenn T. Seaborg''' (19 April 1912 – 25 February 1999) was a chemist and physicist whose work addressed nuclear chemistry, the discovery of new elements, and the organization of the periodic table under nuclear conditions. He examined how heavy nuclei are formed, identified, and classified.

His work reshaped understanding of the actinide elements and their place in nuclear science.

== Early life and education ==
Seaborg was born in Ishpeming, Michigan, and grew up in California. He studied chemistry at the University of California, Los Angeles, and completed doctoral work at the University of California, Berkeley.

His early training combined chemistry with emerging nuclear physics.

== Discovery of transuranium elements ==
Seaborg participated in the discovery and identification of several elements heavier than uranium, including plutonium. These discoveries involved neutron bombardment and radiochemical separation techniques.

The work expanded the known periodic table.

== Actinide concept ==
Seaborg proposed that the heaviest elements form a distinct actinide series analogous to the lanthanides. This reclassification reorganized the periodic table and clarified chemical behavior of heavy elements.

The concept resolved inconsistencies in element placement.

== Nuclear chemistry ==
Seaborg developed methods for isolating and characterizing radioactive elements. His work integrated chemical techniques with nuclear reactions and decay analysis.

These methods became standard in nuclear laboratories.

== Manhattan Project ==
Seaborg worked on plutonium chemistry during the Manhattan Project, contributing to methods for producing and purifying fissile material. His role involved applied nuclear chemistry under wartime conditions.

This work linked laboratory chemistry with large-scale nuclear engineering.

== Relationship to institutions ==
Seaborg held academic positions at the University of California, Berkeley, and later served as an administrator in scientific policy roles. He participated in advisory capacities on nuclear research and education.

His career combined research, teaching, and administration.

== Limits and uncertainty ==
Early identification of transuranium elements relied on indirect measurements later refined by improved instrumentation. Some chemical properties were revised as additional data became available.

Historical assessments balance chemical and physical contributions.

== Status ==
Glenn T. Seaborg is regarded as a central figure in nuclear chemistry and element discovery. His work continues to be discussed in nuclear science, chemistry, and the history of the periodic table.

== Related topics ==

[[Nuclear chemistry]]

[[Transuranium elements]]

[[Actinide series]]

[[Plutonium]]

[[Category:Physicists]]
[[Category:Nuclear physicists]]
[[Category:American scientists]]
[[Category:20th-century physics]]