This is a full report on elemental Mercury.

Mercury holds the 80th spot on the Periodic Table. It has 80 protons, 80 electrons, and 121 neutrons in a neutral atom. It is in the 6th period, and the 12th group. A neutral atom has an atomic weight of 200.59 AMU. It is a silver color, and it is metallic.
Mercury is the only common metal liquid at room temperature, and it is the heaviest elemental liquid. It rarely occurs freely in nature, but can be found in cinnabar ore, in Italy and Spain. It doesn't conduct heat well, but it is a fair conductor of electricity.
No one knows where, or when Mercury was discovered. All we know is…