WEBVor 3 Tagen · Mercury is a chemical element; it has symbol Hg and atomic number 80. It is also known as quicksilver and was formerly named hydrargyrum (/haɪˈdrɑːrdʒərəm/ hy-DRAR-jər-əm) from the Greek words hydor (water) and argyros (silver).[8] A heavy, silvery d-block element, mercury is the only metallic element that is known to be liquid at ...