Niels Bohr.
Japans bombing on pearl harbor
They has fled the fascist government in Germany
Los Alamos National Laboratory in New Mexico .
Bulletin of the Atomic Scientists was created in 1945.
There are no symbols for atomic mass and number. They're just written as numbers.
Germany WAS ON THE VERGE OF COMPLETE DEFEAT. When her scientists were captured, they were persuaded to carry on their work in the safety of American atomic research centers.
Physicists and nuclear scientists create atomic bombs.
British Atomic Scientists Association was created in 1946.
Their symbol, atomic weight, and atomic number.
the symbol scientists use to represent the atomic mass number is the letter U.
The correct symbols are: 235U and 238U.