Periodic table / Antimony

Overview

Antimony is a chemical element with symbol Sb (from Latin:stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb2S3). Antimony compounds have been known since ancient times and were used for cosmetics; metallic antimony was also known, but it was erroneously identified as lead upon its discovery.

Electron configuration

The electron configuration of Antimony is [Kr] 4d10 5s2 5p3, with electron shells of 2, 8, 18, 18, 5.

Physical and chemical properties

Antimony is classified as a metalloid. It has an atomic mass of 121.76 and exists as a solid at standard conditions, appearing as silvery lustrous gray.

Real-world uses of Antimony

Antimony is valued for its semiconducting properties and is used in electronics, alloys, and specialty chemical applications.

Interesting facts about Antimony

• Antimony has the atomic number 51 and chemical symbol Sb.
• It belongs to period 5, group 15 of the periodic table.
• Antimony was known to humans since unknown, before 3000 BC.

Explore Antimony interactively

Want to compare Antimony with other elements or see it highlighted on the full table? Open the interactive periodic table and click on Sb to explore properties, trends, and neighboring elements. You can also test your knowledge with our periodic table quiz game.