- Group 4 element
IUPACnomenclature, Group 4 of the periodic tablecontains the following chemical elements:
This group lies in the
d-blockof the periodic table. The group itself has not acquired a trivial name; it belongs to the broader grouping of the transition metals.
These elements are hard
refractorymetals. Titanium's mechanical properties make it useful in alloys. All isotopes of rutherfordium are radioactive, and have been synthesized in the laboratory, none of them have been found occurring in nature.
The group 4 elements are not known to be involved in the biological chemistry of any living systems. They are hard refractory metals with low acqueous solubility and low availability to the biosphere. Titanium is one of the few first row d-block transition metals with no known biological role. Rutherfordium's radioactivity would make it toxic to living cells.
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