Beryllium 4 Be 9.012182(3)	Beryllium is used in the production of watch springs

Properties

Symbol	Name	Atomic Number	Atomic Weight	Group Number
Be	beryllium	4	9.012182(3)	2

Description

Standard State: solid at 298 K
Color: lead gray 

In 1828, Wohler and Bussy isolated beryllium independently by using potassium on beryllium chloride. Beryllium can scratch glass because of its ability to form oxide around it.