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Concept: element of group IV in the concept vocabulary

Concept URI http://www.eionet.europa.eu/gemet/concept/2639
Preferred label element of group IV
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.
Notation
Status Valid
Status Modified 2013-12-05
Accepted Date 2013-12-05
Not Accepted Date
Has broader
Has narrower
Has close match
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