描述
Gallium, also known as 31ga or galio, is a member of the class of compounds known as homogeneous post-transition metal compounds. Homogeneous post-transition metal compounds are inorganic compounds containing only metal atoms,with the largest atom being a post-transition metal atom. Gallium can be found in a number of food items such as romaine lettuce, yellow zucchini, cucumber, and red beetroot, which makes gallium a potential biomarker for the consumption of these food products. Gallium is a chemical element with symbol Ga and atomic number 31. It is in group 13 of the periodic table, and thus has similarities to the other metals of the group, aluminium, indium, and thallium. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite. Elemental gallium is a soft, silvery blue metal at standard temperature and pressure, a brittle solid at low temperatures, and a liquid at temperatures greater than 29.76 °C (85.57 °F) (above room temperature, but below the normal human body temperature) .