No you mean theoretical. As neutronium is a theoretical substance. To our knowledge there’s no way to find it outside of neuron stars. It is therefore physically impossible, within our current state of knowledge.
It’s highly unlikely, bordering on theoretically impossible to assume that mankind will be able to synthesize enough to fill a cardboard box with. Then the practical side says even if that was possible, there would probably no way a cardboard box could contain that (and a plethora of other practical impossibilities).
No you mean theoretical. As neutronium is a theoretical substance. To our knowledge there’s no way to find it outside of neuron stars. It is therefore physically impossible, within our current state of knowledge.
It’s highly unlikely, bordering on theoretically impossible to assume that mankind will be able to synthesize enough to fill a cardboard box with. Then the practical side says even if that was possible, there would probably no way a cardboard box could contain that (and a plethora of other practical impossibilities).
That and the neutrons would rapidly undergo beta decay producing a LOT of free energy and other particles.
Big Bada Boom!