Barium [Ba] (CAS-ID: 7440-39-3) locate me
An: 56 N: 81 Am: 137.327 (7)
Group No: 2 Group Name: Alkaline earth metal
Block: s-block Period: 6
State: solid
Colour: silvery white Classification: Metallic
Boiling Point: 2171K (1897'C)
Melting Point: 1002K (727'C)
Density: 3.51g/cm3
Shell Structure diagrams | Atomic Radius diagram
Isotopes

Discovery Information
Who: Sir Humphrey Davy
When: 1808
Where: England
Name Origin
Greek: barys (heavy or dense).
Sources
Found in barytine (BaSO4) and witherite (BaCO3), never found in pure form due to its high reactivity.
Uses
Used in sparkplugs, vacuum tubes, fireworks, fluorescent lamps.
Notes
Barium is a metallic element that is chemically similar to calcium, yet is soft and in its pure form is silvery white resembling lead.
All water or acid soluble barium compounds are extremely poisonous.
Must be stored under a petroleum-based fluid (such as kerosene) to remain pure.
Images
Barium burns bright green Barium burns bright green
Barium at work in a firework Barium at work in a firework