Am not aware of any accidental nuclear explosions. Anywhere. Ever.
It explodes.
no!
yes
first off, of course, a nuclear bomb is thousands of times stronger than a normal bomb. a nuclear bomb also carries radiation, energy that causes poisoning and cancer, while most normal bombs cant do that.
US, who else?
the moon
no
Hiroshima was nearly totally destroyed by the atom bomb.
After a nuclear bomb goes off, the energy goes into everything around the place of detonation in a variety of different forms (e.g. blast wave, flying debris, light, nuclear radiation, sound, winds).
1946 off by one year, 1945
That will depend on the size of the bomb, how far above ground it explodes, and how far away it is from you.
Tthe last hydrogen bomb was set of 1991 under the Nevada desert.