Io is slightly larger than the Moon. It has a mean radius of 1,821.3 km (1,131.7 mi) (about 5% greater than the Moon's) and a mass of 8.9319 Ã 10 kg (about 21% greater than the Moon's).
Leo Szilard invented the atomic bomb and reactor in 1933 as a more efficient method of transmuting elements. It took another 12 years plus a $2,000,000,000 investment by the US to build the first bombs. A patent for an atomic bomb was awarde â¦ d to Leo Szilard in 1934. That patent is regarded as the invention of the atomic bomb.   He immediately tried to turn the patent over to the British government as a gift.
U.S. scientists first exploded an atomic bomb in a remote area of New Mexico on July 6, 1945. However the first atomic bomb was dropped on Hiroshima, Japan on August 6, 1945.S â¦ oon Nagasaki (forgot when). 4 people found this useful.here did the first atomic bomb explode in china?   The first atomic bomb didn't explode in China, it exploded in New Mexico, USA July 25, 1945. I'm 95-99% sure New Mexico had the first one.