experimental

Entry: Thorium - showing version 4

URI: https://terra-vocabulary.org/ncl/DataTerraRepositoryFairIncubator/motsClefs/c_ec54c81f

[Wikipedia] Thorium is a weakly radioactive metallic chemical element with the symbol Th and atomic number 90. Thorium is silvery and tarnishes black when it is exposed to air, forming thorium dioxide; it is moderately soft, malleable, and has a high melting point. Thorium is an electropositive actinide whose chemistry is dominated by the +4 oxidation state; it is quite reactive and can ignite in air when finely divided.

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is a Concept | feature of interest
changed on 17 Nov 2023 08:31:48.138
submitted byHélène Bressan
accepted on 22 May 2023 15:01:30.606

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date accepted 22 May 2023 15:01:30.606
date submitted 22 May 2023 13:21:09.478
definition
entity Thorium
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description [Wikipedia] Thorium is a weakly radioactive metallic chemical element with the symbol Th and atomic number 90. Thorium is silvery and tarnishes black when it is exposed to air, forming thorium dioxide; it is moderately soft, malleable, and has a high melting point. Thorium is an electropositive actinide whose chemistry is dominated by the +4 oxidation state; it is quite reactive and can ignite in air when finely divided.
item class Concept | feature of interest
label
en Thorium
fr Thorium
modified 17 Nov 2023 08:31:48.138
notation c_ec54c81f
register mots clefs
status status experimental
submitter
account name h.bressan@brgm.fr
name Hélène Bressan

type register item
version info 4
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Definition

alt label Th
description [Wikipedia] Thorium is a weakly radioactive metallic chemical element with the symbol Th and atomic number 90. Thorium is silvery and tarnishes black when it is exposed to air, forming thorium dioxide; it is moderately soft, malleable, and has a high melting point. Thorium is an electropositive actinide whose chemistry is dominated by the +4 oxidation state; it is quite reactive and can ignite in air when finely divided.
exact match c ec54c81f
in scheme Vocabulaire des mots clefs
label
en Thorium
fr Thorium
pref label
en Thorium
fr Thorium
same as c ec54c81f
top concept of Vocabulaire des mots clefs
type Concept | feature of interest
was attributed to Pole THEIA