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Atomic Symbol Element Protons Electrons Neutrons Atomic weight
Scandium 21 21 24 45
Titanium 22 22 24 48
25
26
27
28
Vanadium 23 23 27 51
28
Chromium 24 24 26 52
27
28
29
30
Manganese 25 25 29 55
30
Iron 26 26 26 56
28
29
30
31
32
33
Cobalt 27 27 30 59
31
32
33
Nickel 28 28 30 59
31
32
33
34
35
36
Copper 29 29 34 64
35
36
Zinc 30 30 34 65
35
36
37
38
40
Yttrium 39 39 50 89
Zirconium 40 40 50 91
51
52
54
56
Niobium 41 41 52 93
Molybdenum 42 42 50 96
52
53
54
55
56
57
58
Technetium 43 43 54 98
55
56
Ruthenium 44 44 52 101
54
55
56
57
58
60
62
Rhodium 45 45 58 103
Palladium 46 46 56 106
58
59
60
62
64
Silver 47 47 60 108
62
Cadmium 48 48 58 112
60
62
63
64
65
66
68