This element is used to separate the isotopes lithium 6 and lithium 7 in the COLEX process. A compound of this metal, carbon, and hydrogen can lead to neurological damage when ingested in Minamata disease. (10[1])Polarography uses a “dropping” (10[1])electrode of this element, whose chloride, known as calomel, is used in many other electrodes. This element’s sulfide forms the mineral cinnabar, which is used (10[1])in the pigment vermillion. The non-metric “torr” unit of pressure (10[1]-5[1])is approximately equal to 1 (10[1])millimeter (10[1])of this (10[1])element. (10[1])For 10 points, amalgams contain what metallic element that is a silvery liquid at room temperature? ■END■ (10[1])