Limits RegistryPUBLIC RECORD
Limits RegistryNeptunium (element 93) was synthesized in 1940 by Edwin McMillan and Philip Abelson at the University of California, Berkeley by bombarding uranium with neutrons — the first transuranium element ever created, opening the door to the subsequent synthesis of plutonium and the entire suite of heavier synthetic elements that followed over the next eight decades.
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Neptunium (element 93) was synthesized in 1940 by Edwin McMillan and Philip Abelson at the University of California, Berkeley by bombarding uranium with neutrons — the first transuranium element ever created, opening the door to the subsequent synthesis of plutonium and the entire suite of heavier synthetic elements that followed over the next eight decades.
The first documented synthesis of a chemical element with an atomic number greater than uranium's (92), none of which occur naturally on Earth in appreciable quantities.
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1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-FIRST-SYNTHESIS-OF-A-SUPERHEAVY-TRANSURANIUM-ELEMENT
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Limits Registry. LR-FIRST-SYNTHESIS-OF-A-SUPERHEAVY-TRANSURANIUM-ELEMENT. First artificial synthesis of a transuranium element. 2026.