Harkins, William Draper
The American William Draper Harkins (1873 - 1951) was a physical chemist.
Harkins correctly predicted the existence of the neutron in 1920, which was eventually detected by James Chadwick about a decade later. He was the first to use the word "neutron" in connection with the atomic nucleus
See also
Last modified:10 January 2026 2.23 p.m.