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Group 4 element
In modern IUPAC nomenclature, Group 4 of the periodic table contains the following chemical elements:
This group lies in the d-block of 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 refractory metals. 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.
Biological occurances
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.
| Explanation of right-hand periodic table slice: |
Transition metals |
atomic number in black are solids |
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solid borders are older than the Earth (Primordial elements) |
dotted borders are made artificially (Synthetic elements) |
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Group_4_element". A list of authors is available in Wikipedia.
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