experimental
Entrée : Cerium - montrer la version 4
URI: https://terra-vocabulary.org/ncl/DataTerraRepositoryFairIncubator/motsClefs/c_7fc9623c
[Wikipedia] Cerium is a chemical element with the symbol Ce and atomic number 58. Cerium is a soft, ductile, and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a steel kitchen knife. Cerium is the second element in the lanthanide series, and while it often shows the +3 oxidation state characteristic of the series, it also has a stable +4 state that does not oxidize water. It is also considered one of the rare-earth elements. Cerium has no biological role in humans and is not very toxic.
Métadonnées principales
| est un | feature of interest | Concept |
| modifié le | 17 Nov 2023 08:31:48.367 |
| soumis par | Hélène Bressan |
| accepté le | 22 May 2023 14:57:51.969 |
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| date accepted |
22 May 2023 14:57:51.969
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| date submitted |
22 May 2023 13:21:09.431
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| definition |
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| description |
[Wikipedia] Cerium is a chemical element with the symbol Ce and atomic number 58. Cerium is a soft, ductile, and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a steel kitchen knife. Cerium is the second element in the lanthanide series, and while it often shows the +3 oxidation state characteristic of the series, it also has a stable +4 state that does not oxidize water. It is also considered one of the rare-earth elements. Cerium has no biological role in humans and is not very toxic.
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Concept
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| modified |
17 Nov 2023 08:31:48.367
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c_7fc9623c
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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
| description |
[Wikipedia] Cerium is a chemical element with the symbol Ce and atomic number 58. Cerium is a soft, ductile, and silvery-white metal that tarnishes when exposed to air, and it is soft enough to be cut with a steel kitchen knife. Cerium is the second element in the lanthanide series, and while it often shows the +3 oxidation state characteristic of the series, it also has a stable +4 state that does not oxidize water. It is also considered one of the rare-earth elements. Cerium has no biological role in humans and is not very toxic.
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c 7fc9623c
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| in scheme |
Vocabulaire des mots clefs
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| same as |
c 7fc9623c
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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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