All those things are dangerous if inhaled or digested. Not only because of its radioactivity, but the fact that basically everything is a heavy metal ... Uranium has something like 27 different oxydes, and reacts with everything that can not run away. Basically every Uranium compound is toxic.
I assumed our algobraic idiot keeps it in a save box ... and only refers to radiation ...
The danger of plutonium is leukemia. It accumulates in bone marrow. The 50/50 lethal dose is in a milligram range per kg body weight.
So, assuming your weight is in the 60kg range, the deadly dose is in the 200mg range. That is not "that low", but still a very low amount. Assuming you get 0.5 mg a day, you get that dose in 400 days ... and as it is accumulating in the bone marrow, and the kidneys only remove a tiny tiny fraction ... it is a death warrant.
Lets check our famous voyager probes, how much plutonium they had ...
Ah, look here: https://ancillary-proxy.atarimworker.io?url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2F... Voyager has an RTG with Pu(238)O2 with 4.5kg fuel ...
And that atomic idiot would love to have one under his bed to keep him warm (he posted such nonsense a few years ago) ...
Then he seems not to know: plenty of decays follow up in a secondary decay of the decay products. Sometimes just a few spit seconds later. And then stupid claims: oh, this is just alpha ... a sheet of paper stops it. No it does not. It filters, the rest goes through via tunnel effects. It is fucking difference if you have a 1g radioactive alpha emitter that emits a few million alpha particles per second, or if you have a cask in your yard, as the moronic alpha male likes, that emits a gazillion particles per second.
And then the idiotic idea that beta radiation does not penetrate the skin. Who the fuck cares? It is in a cask. The cask is shielding. The Bata radiation produces X-Ray and gamma radiation via bremsstrahlung.
Everything radioactive is so fucking harmless, but a little bit of UV-C and UV-B causes skin cancer ...
He learned some bullshit from a school boy magazine when he was 12 ... and the resent 50 years he did not realize that that was a pro nuclear propaganda pamphlet. When he was 16 and should have learned the truth - aka "physics" - he probably was in the wrestling class and taking stereoids instead. Now he has brain damage ... or what ever makes him so stupid. No idea.
Pu238 is a niche isotope ... the others have longer half life, but are still nasty - radiation wise.
Then again: Pu238 does not come alone. In RTGs as mentioned above, it is PuO2 ... and the oxygen makes it a heavy neutron radiator. Pu emits Alpha particles, the Oxygen captures them and emits neutrons.
Good luck atomicalgebra ... your stupidity will kill you sooner or later. Does not even know what "de-" as a prefix syllable means. He thinks it means "off" as in "deactivate".
Anyway, not important. I just wonder how one can stay utterly stupid all his life.