The d-block elements from groups 3-12 are known as transition metals, while the f-block elements, specifically 4f and 5f orbitals, are referred to as inner transition metals.
Which groups of elements in the periodic table are commonly referred to as transition metals and inner transition metals?
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The groups of elements commonly referred to as transition metals are found in groups 3 to 12 of the periodic table. These elements include the d-block elements, and they exhibit characteristic properties such as variable oxidation states and the ability to form complex ions. On the other hand, inner transition metals consist of two series: the 4f series, known as lanthanoids, and the 5f series, known as actinoids. The lanthanoids span from Cerium (Ce) to Lutetium (Lu), while the actinoids span from Thorium (Th) to Lawrencium (Lr). Both series are placed separately at the bottom of the periodic table.