Antimony (Sb) takes its name from the Latin antimonium, the origin of which is uncertain: folk etymologies suggest it is derived from Greek antí ('against') + mónos ('alone'), or Old French anti-moine, 'Monk's bane', but it could plausibly be from or related to Arabic ʾiṯmid, 'antimony', reformatted as a Latin word. (The symbol derives from Latin stibium 'stibnite'.).
Atomic number 51, it has a standard atomic weight of 121.76, a melting point of 903.78 degrees Kelvin, a boiling point of 1860 degrees Kelvin, and is a member of the pentels or pnictogens and Period 5.