Answer:
Robert Oppenheimer
Explanation:
He was the one that realized that cutting an atom in half would make a large enough explosion to make a great impact on a country such as Japan.
The scientist often called the "father of the atomic bomb" is Robert Oppenheimer
Robert Oppenheimer was known to be one of the founding father of the American school of theoretical physics. He head Manhattan Project, the program that developed the first nuclear weapon during World War II
Oppenheimer was noted for his research on astrophysics which lead to the development of atomic bomb used during second world war.
Hence, Robert Oppenheimer was a scientist, often called the "father of the atomic bomb" because of his work as the head of the Manhattan Project.
Learn more about Robert Oppenheimer here: https://brainly.com/question/11777028
