User blog comment:Tyrannoraptor/If Godzilla's heart or/& liver were to rupture/@comment-24974663-20140622100710

Nuclear Reactors do not explode when they meltdown... So why would Godzilla explode when killed? Unless, he of course is exploded with explosives, which is a completely different argument.

In VS Destoroyah, Godzilla MELTED when he went into meltdown. Nuclear reactors work by boiling fluids to power turbines that generate electricity. If the excess heat isn't removed, it causes the fuel assembles to melt; hence the term meltdown or core melt. They are not built like fission bombs, so they do not explode like one.

You are arguing against fictional canon with a fictional view of what nuclear power is... So I find this an odd speculation. He would just leave a radioactive corpse. He might "explode" but only due to the build up of gases due to decomposition; like beached whales have been know to have.