experimental

Entrée : Cadmium

URI: https://terra-vocabulary.org/ncl/DataTerraRepositoryFairIncubator/motsClefs/c_5b2232a1

[Wikipedia] Cadmium is a chemical element with the symbol Cd and atomic number 48. This soft, silvery-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Like zinc, it demonstrates oxidation state +2 in most of its compounds, and like mercury, it has a lower melting point than the transition metals in groups 3 through 11. Cadmium and its congeners in group 12 are often not considered transition metals, in that they do not have partly filled d or f electron shells in the elemental or common oxidation states. The average concentration of cadmium in Earth's crust is between 0.1 and 0.5 parts per million (ppm). It was discovered in 1817 simultaneously by Stromeyer and Hermann, both in Germany, as an impurity in zinc carbonate.

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est un Concept | feature of interest
modifié le 17 Nov 2023 08:31:48.704
soumis parHélène Bressan
accepté le 22 May 2023 15:13:34.205

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date accepted 22 May 2023 15:13:34.205
date submitted 22 May 2023 13:21:09.583
definition
entity Cadmium
source graph graph

description [Wikipedia] Cadmium is a chemical element with the symbol Cd and atomic number 48. This soft, silvery-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Like zinc, it demonstrates oxidation state +2 in most of its compounds, and like mercury, it has a lower melting point than the transition metals in groups 3 through 11. Cadmium and its congeners in group 12 are often not considered transition metals, in that they do not have partly filled d or f electron shells in the elemental or common oxidation states. The average concentration of cadmium in Earth's crust is between 0.1 and 0.5 parts per million (ppm). It was discovered in 1817 simultaneously by Stromeyer and Hermann, both in Germany, as an impurity in zinc carbonate.
item class feature of interest | Concept
label
fr Cadmium
en Cadmium
modified 17 Nov 2023 08:31:48.704
notation c_5b2232a1
register mots clefs
status status experimental
submitter
account name h.bressan@brgm.fr
name Hélène Bressan

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Définition

alt label Cd
description [Wikipedia] Cadmium is a chemical element with the symbol Cd and atomic number 48. This soft, silvery-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Like zinc, it demonstrates oxidation state +2 in most of its compounds, and like mercury, it has a lower melting point than the transition metals in groups 3 through 11. Cadmium and its congeners in group 12 are often not considered transition metals, in that they do not have partly filled d or f electron shells in the elemental or common oxidation states. The average concentration of cadmium in Earth's crust is between 0.1 and 0.5 parts per million (ppm). It was discovered in 1817 simultaneously by Stromeyer and Hermann, both in Germany, as an impurity in zinc carbonate.
exact match 1100 | 20803 | c 5b2232a1
in scheme Vocabulaire des mots clefs
label
fr Cadmium
en Cadmium
pref label
fr Cadmium
en Cadmium
same as 1100 | 20803 | c 5b2232a1
top concept of Vocabulaire des mots clefs
type Concept | feature of interest
was attributed to Pôle THEIA