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Antimony. Sample of antimony (Sb), a metalloid element from group 15 of the periodic table. It can occur in several forms (allotropes), including the metallic form seen here. The other allotropes are explosive antimony, black antimony and yellow antimony. The metallic form is relatively soft and brittle. It has a melting point of 630 degrees Celsius. Antimony, which is toxic, is used in alloys, with its compounds used in fire retardants.
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