experimental
Entrée : Boron - montrer la version 4
URI: https://terra-vocabulary.org/ncl/DataTerraRepositoryFairIncubator/motsClefs/c_5e2a3c98
[Wikipedia] Boron is a chemical element with the symbol B and atomic number 5. In its crystalline form it is a brittle, dark, lustrous metalloid; in its amorphous form it is a brown powder. As the lightest element of the boron group it has three valence electrons for forming covalent bonds, resulting many compounds such as boric acid, the mineral borax, and the ultra-hard crystal boron carbide.
Métadonnées principales
| est un | feature of interest | Concept |
| modifié le | 17 Nov 2023 08:31:48.883 |
| soumis par | Hélène Bressan |
| accepté le | 22 May 2023 15:05:37.031 |
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| date accepted |
22 May 2023 15:05:37.031
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| date submitted |
22 May 2023 13:21:09.539
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| definition |
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| description |
[Wikipedia] Boron is a chemical element with the symbol B and atomic number 5. In its crystalline form it is a brittle, dark, lustrous metalloid; in its amorphous form it is a brown powder. As the lightest element of the boron group it has three valence electrons for forming covalent bonds, resulting many compounds such as boric acid, the mineral borax, and the ultra-hard crystal boron carbide.
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feature of interest
| Concept
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| modified |
17 Nov 2023 08:31:48.883
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| notation |
c_5e2a3c98
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| register |
mots clefs
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| status |
status experimental
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| type |
register item
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| version info |
4
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Définition
| alt label |
B
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| description |
[Wikipedia] Boron is a chemical element with the symbol B and atomic number 5. In its crystalline form it is a brittle, dark, lustrous metalloid; in its amorphous form it is a brown powder. As the lightest element of the boron group it has three valence electrons for forming covalent bonds, resulting many compounds such as boric acid, the mineral borax, and the ultra-hard crystal boron carbide.
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| exact match |
c 5e2a3c98
| 965
| 20802
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| in scheme |
Vocabulaire des mots clefs
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| label |
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| pref label |
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| same as |
c 5e2a3c98
| 965
| 20802
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| top concept of |
Vocabulaire des mots clefs
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| type |
feature of interest
| Concept
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| was attributed to |
Pôle THEIA
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