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This is part of the nuclide map
Legend
Legend
| colour
 | 
Half-life
 | 
 
| 
Nucl.
 | 
<10 -10 seconds
 | 
 
| Nucl.
 | 
<1 minute
 | 
 
| Nucl.
 | 
1 minute to 1 hour
 | 
 
| Nucl.
 | 
1 hour to 1 day
 | 
 
| Nucl.
 | 
1 day to 60 days
 | 
 
| Nucl.
 | 
60 days to 10 years
 | 
 
 
 | 
| colour
 | 
Half-life
 | 
 
| Nucl.
 | 
10 years to 1,000 years
 | 
 
| Nucl.
 | 
1,000 years to 100,000 years
 | 
 
| Nucl.
 | 
100,000 years to 10 million years
 | 
 
| Nucl.
 | 
10 million to 50 million years
 | 
 
| Nucl.
 | 
primordial nuclide (> 50 million years)
 | 
 
| Nucl.
 | 
stable
 | 
 
 
 | 
table
Ordinal numbers 21 to 40
| 
p →
 | 
21st
 | 
22nd
 | 
23
 | 
24
 | 
25th
 | 
26th
 | 
27
 | 
28
 | 
29
 | 
30th
 | 
31
 | 
32
 | 
33
 | 
34
 | 
35
 | 
36
 | 
37
 | 
38
 | 
39
 | 
40
 | 
| 
 | 
Sc
 | 
Ti
 | 
V
 | 
Cr
 | 
Mn
 | 
Fe
 | 
Co
 | 
Ni
 | 
Cu
 | 
Zn
 | 
Ga
 | 
Ge
 | 
As
 | 
Se
 | 
Br
 | 
Kr
 | 
Rb
 | 
Sr
 | 
Y
 | 
Zr
 | 
|  n  ↓
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
| 19th
 | 
40 Sc
 | 
41 Ti
 | 
| 20th
 | 
41 Sc
 | 
42 Ti
 | 
43 V
 | 
| 21st
 | 
42 Sc
 | 
43 Ti
 | 
44 V
 | 
45 Cr
 | 
| 22nd
 | 
43 Sc
 | 
44 Ti
 | 
45 V
 | 
46 Cr
 | 
47 mn
 | 
| 23
 | 
44 Sc
 | 
45 Ti
 | 
46 V
 | 
47 Cr
 | 
48 mn
 | 
49 feet
 | 
| 24
 | 
45 Sc
 | 
46 Ti
 | 
47 V
 | 
48 Cr
 | 
49 mn
 | 
50 feet
 | 
51 Co
 | 
| 25th
 | 
46 Sc
 | 
47 Ti
 | 
48 V
 | 
49 Cr
 | 
50 mn
 | 
51 feet
 | 
52 Co
 | 
53 Ni
 | 
| 26th
 | 
47 Sc
 | 
48 Ti
 | 
49 V
 | 
50 Cr
 | 
51 mn
 | 
52 feet
 | 
53 Co
 | 
54 Ni
 | 
55 Cu
 | 
| 27
 | 
48 Sc
 | 
49 Ti
 | 
50 V
 | 
51 Cr
 | 
52 mn
 | 
53 feet
 | 
54 Co
 | 
55 Ni
 | 
56 Cu
 | 
57 notes
 | 
| 28
 | 
49 Sc
 | 
50 Ti
 | 
51 V
 | 
52 Cr
 | 
53 mn
 | 
54 feet
 | 
55 Co
 | 
56 Ni
 | 
57 Cu
 | 
58 notes
 | 
59 Ga
 | 
| 29
 | 
50 Sc
 | 
51 Ti
 | 
52 V
 | 
53 Cr
 | 
54 mn
 | 
55 feet
 | 
56 Co
 | 
57 Ni
 | 
58 Cu
 | 
59 notes
 | 
60 Ga
 | 
61 Ge
 | 
| 30th
 | 
51 Sc
 | 
52 Ti
 | 
53 V
 | 
54 Cr
 | 
55 mn
 | 
56 feet
 | 
57 Co
 | 
58 Ni
 | 
59 Cu
 | 
60 notes
 | 
61 Ga
 | 
62 Ge
 | 
| 31
 | 
52 Sc
 | 
53 Ti
 | 
54 V
 | 
55 Cr
 | 
56 mn
 | 
57 feet
 | 
58 Co
 | 
59 Ni
 | 
60 Cu
 | 
61 no
 | 
62 Ga
 | 
63 Ge
 | 
64 As
 | 
| 32
 | 
53 Sc
 | 
54 Ti
 | 
55 V
 | 
56 Cr
 | 
57 mn
 | 
58 feet
 | 
59 Co
 | 
60 Ni
 | 
61 Cu
 | 
62 notes
 | 
63 Ga
 | 
64 Ge
 | 
65 As
 | 
| 33
 | 
 | 
55 Ti
 | 
56 V
 | 
57 Cr
 | 
58 mn
 | 
59 feet
 | 
60 Co
 | 
61 Ni
 | 
62 Cu
 | 
63 notes
 | 
64 Ga
 | 
65 Ge
 | 
66 As
 | 
67 Se
 | 
| 34
 | 
 | 
57 V
 | 
58 Cr
 | 
59 mn
 | 
60 feet
 | 
61 Co
 | 
62 Ni
 | 
63 Cu
 | 
64 notes
 | 
65 Ga
 | 
66 Ge
 | 
67 As
 | 
68 Se
 | 
| 35
 | 
 | 
59 Cr
 | 
60 mn
 | 
61 feet
 | 
62 Co
 | 
63 Ni
 | 
64 Cu
 | 
65 notes
 | 
66 Ga
 | 
67 Ge
 | 
68 As
 | 
69 Se
 | 
70 Br
 | 
| 36
 | 
 | 
60 Cr
 | 
61 mn
 | 
62 feet
 | 
63 Co
 | 
64 Ni
 | 
65 Cu
 | 
66 notes
 | 
67 Ga
 | 
68 Ge
 | 
69 As
 | 
70 se
 | 
71 Br
 | 
72 kr
 | 
| 37
 | 
 | 
62 mn
 | 
63 feet
 | 
64 Co
 | 
65 Ni
 | 
66 Cu
 | 
67 notes
 | 
68 Ga
 | 
69 Ge
 | 
70 As
 | 
71 Se
 | 
72 Br
 | 
73 kr
 | 
74 Rb
 | 
| 38
 | 
 | 
63 mn
 | 
64 feet
 | 
65 Co
 | 
66 Ni
 | 
67 Cu
 | 
68 notes
 | 
69 Ga
 | 
70 Ge
 | 
71 As
 | 
72 se
 | 
73 Br
 | 
74 kr
 | 
75 Rb
 | 
76 Sr
 | 
| 39
 | 
 | 
65 feet
 | 
66 Co
 | 
67 Ni
 | 
68 Cu
 | 
69 notes
 | 
70 Ga
 | 
71 Ge
 | 
72 As
 | 
73 Se
 | 
74 Br
 | 
75 kr
 | 
76 Rb
 | 
77 Sr
 | 
78 Y
 | 
| 40
 | 
 | 
66 feet
 | 
67 Co
 | 
68 Ni
 | 
69 Cu
 | 
70 notes
 | 
71 Ga
 | 
72 Ge
 | 
73 As
 | 
74 Se
 | 
75 Br
 | 
76 kr
 | 
77 Rb
 | 
78 Sr
 | 
79 Y
 | 
80 Zr
 | 
| 41
 | 
 | 
68 Co
 | 
69 Ni
 | 
70 Cu
 | 
71 notes
 | 
72 Ga
 | 
73 Ge
 | 
74 As
 | 
75 se
 | 
76 Br
 | 
77 kr
 | 
78 Rb
 | 
79 Sr
 | 
80 Y
 | 
81 Zr
 | 
| 42
 | 
 | 
69 Co
 | 
70 Ni
 | 
71 Cu
 | 
72 notes
 | 
73 Ga
 | 
74 Ge
 | 
75 As
 | 
76 Se
 | 
77 Br
 | 
78 kr
 | 
79 Rb
 | 
80 Sr
 | 
81 Y
 | 
82 Zr
 | 
| 43
 | 
 | 
71 Ni
 | 
72 Cu
 | 
73 notes
 | 
74 Ga
 | 
75 Ge
 | 
76 As
 | 
77 Se
 | 
78 Br
 | 
79 kr
 | 
80 Rb
 | 
81 Sr
 | 
82 Y
 | 
83 Zr
 | 
| 44
 | 
 | 
72 Ni
 | 
73 Cu
 | 
74 no
 | 
75 Ga
 | 
76 Ge
 | 
77 As
 | 
78 Se
 | 
79 Br
 | 
80 kr
 | 
81 Rb
 | 
82 Sr
 | 
83 Y
 | 
84 Zr
 | 
| 45
 | 
 | 
73 Ni
 | 
74 Cu
 | 
75 notes
 | 
76 Ga
 | 
77 Ge
 | 
78 As
 | 
79 Se
 | 
80 Br
 | 
81 kr
 | 
82 Rb
 | 
83 Sr
 | 
84 Y
 | 
85 Zr
 | 
| 46
 | 
 | 
74 Ni
 | 
75 Cu
 | 
76 notes
 | 
77 Ga
 | 
78 Ge
 | 
79 As
 | 
80 se
 | 
81 Br
 | 
82 kr
 | 
83 Rb
 | 
84 Sr
 | 
85 Y
 | 
86 Zr
 | 
| 47
 | 
 | 
76 Cu
 | 
77 notes
 | 
78 Ga
 | 
79 Ge
 | 
80 As
 | 
81 Se
 | 
82 Br
 | 
83 kr
 | 
84 Rb
 | 
85 Sr
 | 
86 Y
 | 
87 Zr
 | 
| 48
 | 
 | 
77 Cu
 | 
78 notes
 | 
79 Ga
 | 
80 Ge
 | 
81 As
 | 
82 Se
 | 
83 Br
 | 
84 kr
 | 
85 Rb
 | 
86 Sr
 | 
87 Y
 | 
88 Zr
 | 
| 49
 | 
 | 
79 notes
 | 
80 Ga
 | 
81 Ge
 | 
82 As
 | 
83 Se
 | 
84 Br
 | 
85 kr
 | 
86 Rb
 | 
87 Sr
 | 
88 Y
 | 
89 Zr
 | 
| 50
 | 
 | 
80 Zn
 | 
81 Ga
 | 
82 Ge
 | 
83 As
 | 
84 Se
 | 
85 Br
 | 
86 kr
 | 
87 Rb
 | 
88 Sr
 | 
89 Y
 | 
90 Zr
 | 
| 51
 | 
 | 
82 Ga
 | 
83 Ge
 | 
84 As
 | 
85 Se
 | 
86 Br
 | 
87 kr
 | 
88 Rb
 | 
89 Sr
 | 
90 Y
 | 
91 Zr
 | 
| 52
 | 
 | 
83 Ga
 | 
84 Ge
 | 
85 As
 | 
86 Se
 | 
87 Br
 | 
88 kr
 | 
89 Rb
 | 
90 Sr
 | 
91 Y
 | 
92 zr
 | 
| 53
 | 
 | 
85 Ge
 | 
86 As
 | 
87 Se
 | 
88 Br
 | 
89 kr
 | 
90 Rb
 | 
91 Sr
 | 
92 Y
 | 
93 Zr
 | 
| 54
 | 
 | 
87 As
 | 
88 Se
 | 
89 Br
 | 
90 kr
 | 
91 Rb
 | 
92 Sr
 | 
93 Y
 | 
94 Zr
 | 
| 55
 | 
 | 
89 Se
 | 
90 Br
 | 
91 kr
 | 
92 Rb
 | 
93 Sr
 | 
94 Y
 | 
95 Zr
 | 
| 56
 | 
 | 
90 se
 | 
91 Br
 | 
92 kr
 | 
93 Rb
 | 
94 Sr
 | 
95 Y
 | 
96 Zr
 | 
| 57
 | 
 | 
91 Se
 | 
92 Br
 | 
93 kr
 | 
94 Rb
 | 
95 Sr
 | 
96 Y
 | 
97 Zr
 | 
| 58
 | 
 | 
93 Br
 | 
94 kr
 | 
95 Rb
 | 
96 Sr
 | 
97 Y
 | 
98 Zr
 | 
| 59
 | 
 | 
95 kr
 | 
96 Rb
 | 
97 Sr
 | 
98 Y
 | 
99 Zr
 | 
| 60
 | 
 | 
96 kr
 | 
97 Rb
 | 
98 Sr
 | 
99 Y
 | 
100 Zr
 | 
| 61
 | 
 | 
98 Rb
 | 
99 Sr
 | 
100 Y
 | 
101 Zr
 | 
| 62
 | 
 | 
99 Rb
 | 
100 Sr
 | 
101 Y
 | 
102 Zr
 | 
| 63
 | 
 | 
101 Sr
 | 
102 Y
 | 
103 Zr
 | 
| 64
 | 
 | 
103 Y
 | 
104 Zr
 |