Antimony

Atomic symbol: Sb
Atomic number: 51
Atomic mass: 121.76

Appearance: Silvery gray solid at 25°C

Group: 15
Period: 5
Series: Metalloids
Block: p
Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p³

Poor conductor of heat and electricity.

Commonly used in alloys with lead and tin.

Fun Fact! In keeping with its use in alloys, antimony was named after the Greek words “anti” and “monos” to mean “a metal not found alone”.

https://www.livescience.com/37390-antimony.html#:~:text=Word%20origin%3A%20Antimony%20was%20named,was%20likely%20used%20even%20earlier.