Assertion: tritium | /r/HasProperty | predicted in late 1920s
Facets:
value: by walter russell
type: OTHER
Source sentences:
text: Starting sentence: "Tritium was first predicted in the late 1920s by Walter Russell, using his "spiral" periodic table.
text: Tritium was first predicted in the late 1920s by Walter Russell, using his "spiral" periodic table[citation needed], then produced in 1934 from deuterium, another isotope of hydrogen, by Ernest Rutherford, working with Mark Oliphant and Paul Harteck.