Ontologies
GEMET
GEneral Multilingual Environmental Thesaurus (GEMET)
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Last submission date January 17, 2022
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ID http://www.eionet.europa.eu/gemet/concept/2639
http://www.eionet.europa.eu/gemet/concept/2639
https://agroportal.lirmm.fr/ontologies/GEMET/2639
Preferred name

element of group IV
Definitions
Group IV consists of two subgroups: group IVb, main group, and group IVa. Group IVa consists of titanium, zirconium, and hafnium which are generally classified as transition metals. The main group consists of carbonium, silicium, germanium, tin, and lead. The main valency of the elements is IV, and the members of the group show a variation from nonmetallic to metallic behaviour in moving down the group. The reactivity of the elements increases down the group from carbon to lead. All react with oxygen on heating.
Member of
http://www.eionet.europa.eu/gemet/group/1349
http://www.eionet.europa.eu/gemet/theme/6
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http://www.eionet.europa.eu/gemet/gemetThesaurus
Type http://www.w3.org/2004/02/skos/core#Concept

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rdf:type
dct:created
January 1, 0001
dct:modified
January 1, 0001
skos:broader
skos:definition
Group IV consists of two subgroups: group IVb, main group, and group IVa. Group IVa consists of titanium, zirconium, and hafnium which are generally classified as transition metals. The main group consists of carbonium, silicium, germanium, tin, and lead. The main valency of the elements is IV, and the members of the group show a variation from nonmetallic to metallic behaviour in moving down the group. The reactivity of the elements increases down the group from carbon to lead. All react with oxygen on heating.
skos:prefLabel
element of group IV
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source
Nicolini, N.; Scaioni, U. (Trad.), Dizionario di Chimica, Sperling & Kupfer Ed., Milano, 1992
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