Sulfur has 16 protons, 16 neutrons and 16 electrons. Its atomic number is 16, and it has an atomic mass of 32.066 amu. Sulfur is a pale, yellow, non-metallic solid.
Sulfur is famous for its distinctive smell. The production of black gunpowder, rubber, insecticides and many pharmaceuticals involves the use of sulfur.
Sulfur was used in the religious rites of many ancient cultures because its smell was thought to ward off evil spirits. Ancient Romans enjoyed fireworks displays and produced weapons which used sulfur. Sulfur was identified as an element in 1787, and the first underground deposits were found in Louisiana and Texas in 1867.