21 Sc
Scandium
22 Ti
Titanium
23 V
Vanadium
24 Cr
Chromium
25 Mn
Manganese
26 Fe
Iron
27 Co
Cobalt
28 Ni
Nickel
29 Cu
Copper
30 Zn
Zinc
31 Ga
Gallium
32 Ge
Germanium
33 As
Arsenic
34 Se
Selenium
35 Br
Bromine
36 Kr
Krypton
37 Rb
Rubidium
38 Sr
Strontium
39 Y
Yttrium
40 Zr
Zirconium
41 Nb
Niobium
42 Mo
Molybdenum
43 Tc
Technetium
44 Ru
Ruthenium
45 Rh
Rhodium
46 Pd
Palladium
47 Ag
Silver
48 Cd
Cadmium
49 In
Indium
50 Sn
Tin