Who is credited with discovering the most elements as discoverer or co-discoverer?

Glenn t. seaborg-glenn theodore seaborg was an american scientist who won the 1951 nobel prize in chemistry for discoveries in the chemistry of the transuranium elements, contributed to the discovery and isolation of ten elements, developed the actinoids concept and was the first to propose the actinoids series which led to the current arrangement of the periodic table of the elements. seaborg was the principal or co-discoverer of ten elements: plutonium, americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium and element 106, which was named seaborgium in his honor while he was still living. he also developed more than 100 atomic isotopes, and is credited with important contributions to the separation of the isotope of uranium used in the atomic bomb at hiroshima.