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