The 3d series in the transition metals consists of elements with atomic numbers 21 to 30. These elements are found in the fourth period of the periodic table and include:
Scandium (Sc, Z = 21)
Titanium (Ti, Z = 22)
Vanadium (V, Z = 23)
Chromium (Cr, Z = 24)
Manganese (Mn, Z = 25)
Iron (Fe, Z = 26)
Cobalt (Co, Z = 27)
Nickel (Ni, Z = 28)
Copper (Cu, Z = 29)
Zinc (Zn, Z = 30)
These elements exhibit characteristic transition metal properties, including variable oxidation states, metallic luster, and the ability to form complex ions.