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General information about Barium |
| barium |
| Ba |
| 56 |
| alkaline earth metals |
| 2 |
| 6 |
| s |
| silvery white |
| 137.33 g·mol-1 |
1s2 2s2p6 3s2p6d10
4s2p6d10 5s2p6 6s2 |
| 2, 8, 18, 18, 8, 2 |
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Physical properties of Barium |
| solid |
| ? |
| 1000(K), 727°C, 1341°F |
| 2170(K), 1897°C, 3447°F |
| ? |
| ? |
| 7.12 kJ·mol-1 |
| 140.3 kJ·mol-1 |
| 28.07 J·mol-1·K-1 |
| 0.89 (Pauling scale) |
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Atomic structure of Barium |
| 2.78 Å |
| 39.24 cm³/mol |
| 1.98 Å |
| 1.3 |
| Cubic body centered |
| 134 (+2e) |
| 6s2 |
| 56 |
| 81 |
| 56 |
| 2 |
| 6s2 |
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Electron dot
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Other languages |
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| Latin: |
Baryum |
| Czech: |
Baryum |
| Croatian: |
Barij |
| French: |
Baryum |
| German: |
Barium - s |
| Italian: |
Bario |
| Norwegian: |
Barium |
| Portuguese: |
Bário |
| Spanish: |
Bario |
| Swedish: |
Barium |
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| Element |
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56 |
2
8
18
18
8
2
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Ba |
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137.327 |
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Brief description |
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Barium has a melting point of 725C, boiling point of 1640C, specific gravity of 3.5 (20C), with a valence of 2. Barium is a soft metallic element. In its pure form, it is silvery white. The metal oxidizes readily and should be stored under petroleum or other oxygen-free liquids. Barium decomposes in water or alcohol. Impure barium sulfide phosphoresces following exposure to light. All barium compounds that are soluble in water or acid are poisonous.
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Uses of Barium |
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Barium is used as a 'getter' in vacuum tubes. Its compounds are used in pigments, paints, glassmaking, as weighting compounds, in the manufacture of rubber, in rat poison, and in pyrotechnics.
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Hystory of Barium |
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- Discoverer: Humphrey Davy
- Discovery Location: England
- Discovery Year: 1808
- Name Origin: Greek: barys, heavy or dense
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a/barns: