Group 4 element
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A Group 4 element is an element in periodic table group 4 (IUPAC style) in the periodic table, which consists of:
- titanium (22)
- zirconium (40)
- hafnium (72)
- rutherfordium (104)
All of these elements are classed in Group 4 because their valence shell holds four electrons. Rutherfordium can only be produced in the laboratory and has not been found in nature.
| Key to color coding in table slice on right: | Transition metals |
Color coding for these atomic numbers: At room temperature, all are solid; red indicates item is synthetic and does not occur naturally.ca:Grup 4 de la taula perịdica es:Elementos del grupo 4 eo:Elemento de grupo 4 it:Elementi del gruppo 4