Mercury

Atomic symbol: Hg
Atomic number: 80
Atomic mass: 200.59

Appearance: Shiny, silvery liquid at 25°C

Group: 12
Period: 6
Series: Transition metals
Block: d
Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s²

The only metallic element that is liquid at room temperature and at standard conditions for temperature and pressure.

Also referred to as “quicksilver”.

Dense, highly toxic and poisonous to many organisms.

Fun Fact! Like gold, mercury has also been known since ancient times, well before written documents were kept, hence details around its discovery is unknown. Mercury has been traced back to over 4000 years ago.

https://www.chemicool.com/elements/mercury.html https://www.webelements.com/mercury/history.html#:~:text=Mercury%20was%20known%20to%20ancient,those%20using%20it%2C%20in%20cosmetics.