Question

The chemist who developed in the discovery of the maximum number of transuranic element is:
A. Sir Robert Robinson
B. Sir J.J Thomos
C. Professor Sea Borg
D. Sir N.C. Hishel-wood

Answer 1

Hint: There are various people who dealt with the discovery of transuranium elements. McMillan was the person who found the first man-made transuranium element, i.e. Neptunium. Transuranium elements include the elements after Uranium.

Complete step by step answer:
Of the elements with atomic numbers $1$ to $92$, all can be found in nature. The term transuranium elements usually include the elements after Uranium. They all are radioactive with a half-life much shorter than the age of earth. Thus the physical and chemical properties of these elements are difficult to study.
Most of the transuranium elements are produced through the use of neutrons from nuclear fission reactions. Some of them are Neptunium, Plutonium, Americium, Curium, etc. Neptunium was the first man-made transuranium element. It was discovered by McMillan and Abelson while studying the neutron induced fission of uranium.
Glenn Theodore Seaborg identified the second transuranium element Plutonium. He was the person who developed the discovery of the maximum number of transuranic elements. Seaborg shared the Nobel prize for Chemistry in 1951 with McMillan for the development of transuranium elements. Along with Plutonium, he introduced several other elements also. They are Americium, Curium, Berkelium, Californium, Einsteinium, Fermium, Mendelevium, Nobelium and Seaborgium. Seaborgium was named after him.
Hence the option C is correct.

Additional information:
Seaborg was the only person for whom a chemical element was named. He collaborated with a physicist to develop iodine$ - 131$ which was further used for his mother’s thyroid treatment.

Note:
Seaborg discovered a total of nine transuranium elements. It had the atomic numbers $95 - 102$ and $106$. Seaborg introduced a concept called actinide concept which helped to predict the chemical properties, method of isolation and placement of such heavier elements in periodic table.