of the Habr.

Uranium itself is radioactive.

222: Should I send you to wiki, or will you go?

111: Let’s go together, what...

Radioactive elements in the strict sense are all the elements following lead in the Mendeleev table (including vismut), as well as the elements of technetium and prometium.

222 in the strict sense. At home, you can embrace.

For the sake of humor, you can embrace anything, just some things - 1 time.

444: Well you, embrace yourself with the uranium pieces.