What would happen if there were a nuclear fallout

Besides the immediate destruction of cities by nuclear blasts, the potential aftermath of a nuclear war could involve firestorms, a nuclear winter, widespread radiation sickness from fallout, and/or the temporary (if not permanent) loss of much modern technology due to electromagnetic pulses.

A nuclear war could result in firestorms, a nuclear winter, widespread radiation sickness from fallout, and/or the temporary (if not permanent) loss of much contemporary equipment due to electromagnetic pulses.

you need to have a picture of the atom that way we can answer it