Which transuranium element was Edwin McMillan the first to produce?
Plutonium
Americium
Neptunium
Curium
Answer
Neptunium was the first transuranium element to be produced. Edwin McMillan and Philip Abelson discovered it in 1940, when they bombarded uranium with neutrons. Neptunium is a radioactive element with the atomic number 93. It is a silvery-white metal that is chemically similar to uranium. Neptunium is not found in nature, but it can be produced in nuclear reactors.
Unraveling the Genius: A Quiz on Edwin McMillan – The Trailblazing American Physicist
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