5. fas
≡
Rubidium
Rb
37
Strontium
Sr
38
Yttrium
Y
39
Zirkonium
Zr
40
Niob
Nb
41
Molybden
Mo
42
Teknetium
Tc
43
Rutenium
Ru
44
Rodium
Rh
45
Palladium
Pd
46
Silver
Ag
47
Kadmium
Cd
48
Indium
In
49
Tenn
Sn
50
Antimon
Sb
51
Tellur
Te
52
Jod
I
53
Xenon
Xe
54