All the elements above 92 (I believe it is) are Man-made. Although they are created in nature as well, they virtually immediately cease to be (just as in laboratories by us) due to instability from the high amounts of energy involved in making them, therefore the energy is trapped in the nucleus, and breaks it apart near immediately (in time from our perspective).
I was reading this:
http://www.livescience.com/technology/destroy_earth_mp-1.htmlAnd the line, "Creating a microscopic black hole is tricky, since one needs a reasonable amount of neutronium, but may possibly be achievable by jamming large numbers of atomic nuclei together until they stick." made me realize that a "Black Hole" should be an atom on the Periodic Table of Elements" as, having an atom with "X" amount of protons and neutrons for a fleeting moment together in the smallest volume of space possible is sufficient to make a "Black Hole" therefore no real atom above it could ever exist!
The Periodic Table is now complete?
Does anyone else find this interesting?