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General information about Lanthanum |
| Lanthanum |
| La |
| 57 |
| Lanthanides |
| 3 |
| 6 |
| f |
| silvery white |
| 138.90547(7) g·mol-1 |
1s2 2s2p6 3s2p6d10
4s2p6d10 5s2p6d1 6s2 |
| 2, 8, 18, 18, 9, 2 |
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Physical properties of Lanthanum |
| solid |
| 6.162 g·cm-3 |
| 1193(K), 920°C, 1688°F |
| 3737(K),
3464°C, 6267°F |
| ? |
| ? |
| 6.20 kJ·mol-1 |
| 402.1 kJ·mol-1 |
| 27.11 J·mol-1·K-1 |
| 1.10 (Pauling scale) |
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Atomic structure of Lanthanum |
| 2.74 Å |
| 20.73 cm³/mol |
| 1.69 Å |
| 8.98 |
| Hexagonal |
| ? |
| 5d1 |
| 57 |
| 82 |
| 57 |
| 3 |
| 5p1 6s2 |
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Electron dot
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Other languages |
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| Latin: |
Lanthanium |
| Czech: |
Lanthan |
| Croatian: |
Lantan |
| French: |
Lanthane |
| German: |
Lanthan - r |
| Italian: |
Lantanio |
| Norwegian: |
Lantan |
| Portuguese: |
Lantânio |
| Spanish: |
Lantano |
| Swedish: |
Lantan |
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| Element |
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57 |
2
8
18 18
9
2
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La |
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138.9054 |
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Brief description |
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Found with rare earths in monazite and bastnasite. Around 12,500 tons are produced world wide each year. Primary mining areas are USA, Brazil, India, Sri Lanka, Australia.
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Uses of Lanthanum |
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Because it gives glass refractive properties, it is used in expensive camera lenses. Also used in lighter flints, battery electrodes and catalytic converters.
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Hystory of Lanthanum |
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- Discoverer: Carl Gustaf Mosander
- Discovery Location: Sweden
- Discovery Year: 1839
- Name Origin: from the Greek word lanthaneis - to lie hidden
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