Gallium is the chemical element of atomic number 31. Its symbol is Ga. It is a rare, soft metal and silvery. Gallium is very fragile at room temperature and its melting point is 29.76 ° C; Can melt with the heat of a person's hands (melting compresses by increasing density). It is traced in bauxite and zinc minerals. Gallium arsenide is an important semiconductor used in many electronic devices, especially in LED diodes.
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