21 Responses

  1. Tom
    Tom at |

    This is a seriously cool list. Nicely written, too.

  2. dotmatrix
    dotmatrix at |

    Great list! One quibble: it was radiation poisoning that killed Litvinenko, not cancer.

  3. xdr
    xdr at |

    Fluoroantimonic acid is 2×1019 (20 quintillion) times stronger than 100% sulfuric acid. Not 21019times… It would burn through the universe…

    1. Roger
      Roger at |

      Fluoroantimonic acid is 2 times 10 to the 19th power more acidic than sulphuric acid. The cut-pasting is to blame. 2 x 10^19. The other number, 2^1019 would be, roughly, 5.617791^306.

  4. Claypot
    Claypot at |

    great list!
    really enjoyed reading it 🙂

    keep up the good work toptenz.net 😀

  5. Morrison
    Morrison at |

    Fabulous list, David. Great humour.

  6. Dave
    Dave at |

    I’m sorry but the authers statement that Alexander Litvinenko died of cancer is incorrect. He died of radiation poisoning. He was not alive long enough after the poisoning to have developed any sort of cancer.


  7. Drakman
    Drakman at |

    Forgive me, but I’d be remiss if I did not point out that Alexander Litvinenko did NOT die of cancer (as erroneously purported in the haphazardly researched piece above) but rather from RADIATION SICKNESS as everyone, everywhere knows.

    Well, everyone BUT YOU apparently.

    You have disgraced top ten lists everywhere and should feel deep shame beyond all humiliation.

    … seriously – what’s the name of the 1st one? The darkest one that you refer to as “the substance”…what’s it called?

    1. Zabeeble
      Zabeeble at |

      Thank you for your list. I found it very interesting and helpful.

      “… as everyone, everywhere knows.”

      I didn’t know it. I am sure that there are many, many others out there who did not (or do not) know. That fact being said, your statement is false. Have a good day.

  8. TheMindRobber
    TheMindRobber at |

    Dude, you forgot to put down the neutron core that makes up most of the mass of neutron stars.

    It is utterly incompressable. This is because the extreme gravity of a very high mass star super novaeing (i didnt know how to spell it) strips all the protons and electrons away from the core of the star and forces the neutrons almost into each other. It is also the greatest super fluid ever, so it should take the place of two of the items on your “so-called” list.

    Lol, you did a good list and it was very interesting

  9. Herp N Derpington
    Herp N Derpington at |

    It is 21019 times more powerful than sulphuric acid…

    Fluoroantimonic acid is 219 times more powerful than sulphuric acid. 21019 is… a number beyond human comprehension.

  10. Herp N Derpington
    Herp N Derpington at |

    should have read 2^1019, and 2^19, respectively.

  11. Ali
    Ali at |

    Polonium 210 is not the most radioactive substance. As an example, one gram of Po210 decays at a? rate of 166,258,000,000,000 times per second. That is quite hot.

    But, Tin 127 decays at a rate of 435,000,000,000,000,000 decays per second. More than 2600 times hotter, pound for pound. (Note: Stable Tin is Tin Sb112 to Sb124. Sb127 is uncommon).

    Polonium is very dangerous, but not the most dangerous. Its possible own an extremely tiny amount which is approved for use by the government (NRC exempt).

  12. Josh
    Josh at |

    There is a very small amount (Maybe even less than 0.0001 liters) of polonium inside your body. I have no Idea what its for, but its one of those slightly harmless isotopes of it.

  13. Melanie
    Melanie at |

    Great top 10 list! I’m going to have to seriously rethink my Botox injections.

  14. Tom
    Tom at |

    Great list. You forgot to mention that Botolinum Toxin is also the most valuable substance in the world at ~$230, 000,000,000,000/kg (100 trillion GBP per/kg)

  15. William
    William at |

    Actually, the most explosive substance in the world is octanitrocubane. Heptanitrocubane has an explosive velocity of 9200 while OCTAnitrocubane has one of 10,600.

  16. rcxb
    rcxb at |

    In fact the Nazi’s were going full-bore with chlorine triflouride, they just couldn’t produce it fast enough, so never got a chance to use it.

  17. ??
    ?? at |

    “No word on whether Japanese physicists have to commit Sepuku under these circumstances.”

    Ruining an otherwise interesting list with irrelevant racism ¯\_(?)_/¯

  18. Bob
    Bob at |

    Interesting list, but it is never explained how any of these “most” things are contained. For instance it shows an acid that will eat thru glass tube. How does that work? Or a gas that is so thin that it will leak between the atoms of its container. What do you put that into?

  19. Nikos
    Nikos at |

    The picture you used on #9 is the same picture wiki has on Thermite 🙂



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