Almost all metals can form amalgams with mercury, at the exception of iron, platinum, tungsten and tantalum.
Now, if you boil off the mercury, it will evaporate and you will be left with a residue of pure gold. Another really neat and interesting party trick! In ancient times, you can imagine how people would think this is magical!
But beware...
Mercury is the bad boy of the periodic table - exquisitely beautiful, but also deadly.
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