ninety-ninth, which is metaphorical, but i would like it to be named after einstein, there is an element named after mendeleevhis death, what is their peculiarity, that they do not exist in nature, and einstein's element was obtained as a result of thermonuclear explosions, as a side reaction. in such gigantic quantities of macroscopic, and heavier elements, some of them are found on earth, but many are in the universe there... where these elements are synthesized continuously, yes, they are there in in principle they can be, the same einstein and fermat, of course, they are in the broad sense of understanding nature in the universe, they are, but we do not find them on earth, we do not find them, because on earth we can find those elements or those isotopes of these elements that are either stable, or those that live, uh, do not decay long enough to survive on earth, let me remind you that the earth in general in the solar system is about... 45 billion years old, and those elements that live billions of years longer, they are on earth, that's it uranium, this is the last element, uranium 238, its half-life,