2
No they do not.
68 cities and the two with with atomic bombs make it imposible to come out whith the real numbers.
7 :)
The US made atomic bombs from 1945 to 1992.
As both atomic bombs and supernovas vary in yield, this question has no single answer.
Atomic bombs- Zero.
2
100
More & higher yield atomic bombs, I guess.
Atomic bombs were dropped in WWII
Yes, uranium can be used in atomic bombs.
Many atomic bombs were detonated for "test" purposes. Fortunately none were used in war.