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Group 4 is a group of elements in the periodic table. It contains the elements titanium (Ti), zirconium (Zr), hafnium (Hf) and rutherfordium (Rf). 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.
Titanium is the ninth most abundant element in the crust of the Earth. Its found in soils, sands, rocks, clays, water, plants and animals. It is never found as a pure metal because it reacts so readily with oxygen. It, instead, is found in ores.