If you are referring to the WW2 atomic bombs, 120 inches or 10 feet because anything longer would not fit inside the B-29 bombbay. If you meant something else, please clarify as atomic bombs were made in a variety of sizes after the war for various uses.
It didn't. Japan existed long before the atomic bomb
All the early atomic bombs were 10 feet long, the length of the longest bomb that fit in the B-29 bombbay.
The story is too long to tell here. Read Richard Rhode's book: The Making of the Atomic Bomb.
The story is long and complicated, too long to do justice to it here. I suggest reading Richard Rhodes' book The Making of the Atomic Bomb.
128.375 inches
See: Atomic bombings of Hiroshima and Nagasaki
The US were working on the bomb since 1941 up to 1945 when the first bomb tested.
If you consider the US atomic bomb is a Christian bomb, the French atomic bomb is also Christian bomb and so on, then you can name the Pakistani atomic bomb an Islamic bomb.
how was the atomic bomb repaired
I don't think anyone has seen an atomic bomb and lived,but so say about 3 to 4 days.
Well I am pretty sure they call an atomic bomb nukes because atomic bombs and be called nuclear bombs. So instead of calling these super long name they made the bomb a short nick name a nuke
18th May1998, but its not atomic bomb (its nuclear bomb)