Probably depends on the material it's made of but I like to think it becomes super condensed around the explosion or mushroom cloud expanding outwards until it dissipates and oxygen albeit now probably contaminated will slowly reenter the blast zone you'd probably smother to death if the blast didn't unalive you
Nuclear explosion; what happens to the surrounding atmosphere on a molecular level? Anyone checked?
Probably depends on the material it's made of but I like to think it becomes super condensed around the explosion or mushroom cloud expanding outwards until it dissipates and oxygen albeit now probably contaminated will slowly reenter the blast zone you'd probably smother to death if the blast didn't unalive you