If the Hiroshima is mortal or not mortal?

Answer 1

Moral or mortal? Mortal means subject to death, so in that respect, Hiroshima was mortal. Was the decision to use the nuclear bomb moral, just look at the Okinawa campaign for the answer. A very bloody campaign with high causality rates and almost no Japanese survivors. Most Allied estimates for causalities to invade the home islands of Japan was 250,000 minimum. This doesn't include Japanese casualties. Or continuing the conflict for the additional years.
Even after the first bomb, Japan did not surrender immediately - some in the military wanted to fight to the last person. So, using the bombs to end the war was a difficult but moral decision for the time.

Answer 2

If you mean Moral or not Moral, it was a very Moral decision at the time. As Jack explained not to have used them would have meant the deaths of possibly ten times as many people.

Answer 3

time was created to embrace what survives
mortal will have to be forfeited to the whole of survival