4 ms·

Yeah, but even worse. You need to add a lot of nucleons to iron just to get to (impure, radioactive) lead, and then from there to gold.

• cowpig 4y ago
  Iron (26) -> Lead (82) -> Gold (79) How does that work?
  • andrewflnr 4y ago
    Ha, woops. I was just assuming Gold had higher atomic number. But I don't know, maybe a convenient positron emission decay path.
    • Schroedingersat 4y ago
      You smash a proton into it and knock a light atom nucleus off. Works every time about 2% of the time. For the stuff that doesn't end up as gold you can just keep hitting it with neutrons until it's heavy enough to try again.