Which naturally occurring metal remains liquid at room temperature?
The naturally occurring metal that remains liquid at room temperature is mercury. It is a chemical element with the symbol Hg and atomic number 80. Mercury is unique among metals because it has a melting point of approximately −38.83°C, allowing it to remain in liquid form under ordinary room-temperature conditions. It has a shiny, silvery appearance and was historically used in thermometers, barometers, and other scientific instruments. Mercury is also known as quicksilver because of its ability to flow easily like a liquid. Although it has several industrial and scientific applications, mercury is highly toxic. Exposure to mercury, particularly through inhalation of its vapours, can damage the nervous system, kidneys and other organs. Due to these health and environmental risks, its use in many everyday products has been restricted or phased out in several countries.