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2KI + HgCl₂ -----> 2KCl + HgI₂
The Latin Name of Mercury is Hydrargyrum that is why it's symbol is Hg.
Latinized Greek: hydrargyrum, from "hydr-" meaning watery or runny and "argyros" meaning silver
hydrargyrum
no its not its the symbol for hydrogen and it comes from the Irish word hydrargyrum