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” (-5[1])electrode (10[1])of this element, whose chloride, known as calomel, is used in many other electrodes. This element’s sulfide forms the mineral cinnabar, (10[1])which is (10[1])used in the pigment vermillion. The non-metric “torr” unit of pressure is approximately equal to 1 millimeter of this element. For 10 points, amalgams contain what metallic element that is a silvery liquid at room temperature? (10[1])■END■