The chemical element with the symbol ‘Hg’ is mercury. It is known for being the only metal that is liquid at room temperature and has a unique silvery appearance. Mercury is a heavy and toxic element, historically used in thermometers, barometers, and various industrial applications. Due to its toxicity, however, its use is increasingly being phased out in favor of safer alternatives. Mercury is also found naturally in the environment, where it can accumulate in living organisms, leading to significant health concerns for humans and wildlife alike.