Antimony belongs to the family of elements called pnictogens. Its chemical symbol "Sb" is derived from the Latin word "stibium." Antimony is placed in group 15 or p-block and period 5 of the periodic table.
The atomic number of antimony is 51, and its atomic weight is 121.760 atomic mass units. Its electron configuration is [Kr] 4d10 5s2 5p3 or 2, 8, 18, 18, 5 electrons per shell.
Pure antimony is quite soft; and, it reacts with oxygen when it is heated. At room temperature, antimony is a shiny gray solid, which melts at 1167.13 degrees Fahrenheit. Antimony is found naturally in the form of a sulphide compound, called stibnite.