The Transitional Metals, Groups 3 through 10, and 12 of the periodic table, comprise:

#21 – Scandium (Sc)

#22 – Titanium (Ti)

#23 – Vanadium (V)

#24 – Chromium (Cr)

#25 – Manganese (Mn)

#26 – Iron (Fe)

#27 – Cobalt (Co)

#28 – Nickel (Ni)

#30 – Zinc (Zn)

#39 – Yttrium (Y)

#40 – Zirconium (Zr)

#41 – Niobium (Nb)

#42 – Molybdenum (Mb)

#43 – Technetium (Tc)

#44 – Ruthenium (Ru)

#45 – Rhodium (Rh)

#46 – Palladium (Pd)

#48 – Cadmium (Cd)

#72 – Hafnium (Hf)

#73 – Tantalum (Ta)

#74 – Tungsten

#75 – Rhenium (Re)

#76 – Osmium (Os)

#77 – Iridium (Ir)

#78 – Platinum (Pt)

#80 – Mercury (Hg)