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Atomic Number: 56
Ba
Ba

Barium

137.3300 u

Category

alkaline earth metal

State at Room Temperature

solid

Electron Configuration

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s²

Valence Electrons

2

Lewis Dot:••

Electronegativity

0.89

Pauling scale

Oxidation States

+2

Melting Point

1000 K

726.85°C

Boiling Point

2170 K

1896.85°C

Density

3.51

g/cm³

Position in Table

Group 2Period 6s-block

Discovery

Historical Information

Discovered byHumphry Davy
Year1808

Common Uses

Applications & Industries

Drilling fluids, fireworks, medical imaging, pigments

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