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General information about Hafnium |
| Hafnium |
| Hf |
| 72 |
| Transition Metals |
| 4 |
| 6 |
| d |
| steel grey |
| 178.49 g·mol-1 |
1s2 2s2p6 3s2p6d10
4s2p6d10f14 5s2p6d2 6s2 |
| 2, 8, 18, 32, 10, 2 |
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Physical properties of Hafnium |
| solid |
| 13.31 g·cm-3 |
| 2506(K),
2233°C, 4051°F |
| 4876(K),
4603°C, 8317°F |
| ? |
| ? |
| 27.2 kJ·mol-1 |
| 571 kJ·mol-1 |
| 25.73 J·mol-1·K-1 |
| 1.3 (Pauling scale) |
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Atomic structure of Hafnium |
| 2.16 Å |
| 13.6 cm³/mol |
| 1.44 Å |
| 104 |
| Hexagonal |
| 78 (+4e) |
| 5d2 |
| 72 |
| 106 |
| 72 |
| 4 |
| 5d6 6s2 |
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Electron dot
model |
Other languages |
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| Latin: |
Hafnium |
| Czech: |
Hafnium |
| Croatian: |
Hafnij |
| French: |
Hafnium |
| German: |
Hafnium - s |
| Italian: |
Afnio |
| Norwegian: |
Hafnium |
| Portuguese: |
Háfnio |
| Spanish: |
Hafnio |
| Swedish: |
Hafnium |
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| Element |
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72 |
2
8
18
32
10
2 |
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Hf |
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178.49 |
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Brief description |
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Obtained as a by-product zirconium refining. Around 50 tons are produced world wide annually.
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Uses of Hafnium |
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Used in reactor control rods because of its ability to absorb neutrons also as a gas scavenger in vacuum tubes.
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Hystory of Hafnium |
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- Discoverer: Dirk Coster, Georg von Hevesy
- Discovery Location: Denmark
- Discovery Year: 1923
- Name Origin: Hafnia is Latin name of Copenhagen.
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