Data extracted from Mathematica v12, “ElementData” entity
CumCount = Cumulative count of elements since archaic times
Number = Atomic number
Symbol = Chemical symbol
Date = Earliest use or discovery year, CE (minus => B.C.E.)
YrsAgo = Years prior to 2021

CumCount Number Symbol Date YrsAgo
1 29 Cu -8000 10021
2 82 Pb -4000 6021
3 6 C -3750 5771
4 47 Ag -3000 5021
5 50 Sn -3000 5021
6 51 Sb -3000 5021
7 79 Au -2500 4521
8 26 Fe -2000 4021
9 80 Hg -1500 3521
10 16 S -500 2521
11 33 As 1250 771
12 83 Bi 1400 621
13 30 Zn 1500 521
14 15 P 1669 352
15 27 Co 1735 286
16 78 Pt 1735 286
17 28 Ni 1751 270
18 12 Mg 1755 266
19 1 H 1766 255
20 7 N 1772 249
21 8 O 1774 247
22 17 Cl 1774 247
23 25 Mn 1774 247
24 42 Mo 1781 240
25 52 Te 1783 238
26 74 W 1783 238
27 40 Zr 1789 232
28 92 U 1789 232
29 38 Sr 1790 231
30 22 Ti 1791 230
31 39 Y 1794 227
32 4 Be 1797 224
33 24 Cr 1797 224
34 23 V 1801 220
35 41 Nb 1801 220
36 73 Ta 1802 219
37 45 Rh 1803 218
38 46 Pd 1803 218
39 58 Ce 1803 218
40 76 Os 1803 218
41 77 Ir 1803 218
42 11 Na 1807 214
43 19 K 1807 214
44 5 B 1808 213
45 20 Ca 1808 213
46 56 Ba 1808 213
47 53 I 1811 210
48 3 Li 1817 204
49 34 Se 1817 204
50 48 Cd 1817 204
51 14 Si 1824 197
52 13 Al 1825 196
53 35 Br 1826 195
54 90 Th 1829 192
55 57 La 1839 182
56 68 Er 1842 179
57 65 Tb 1843 178
58 44 Ru 1844 177
59 55 Cs 1860 161
60 37 Rb 1861 160
61 81 Tl 1861 160
62 49 In 1863 158
63 31 Ga 1875 146
64 67 Ho 1878 143
65 70 Yb 1878 143
66 21 Sc 1879 142
67 62 Sm 1879 142
68 69 Tm 1879 142
69 64 Gd 1880 141
70 59 Pr 1885 136
71 60 Nd 1885 136
72 9 F 1886 135
73 32 Ge 1886 135
74 66 Dy 1886 135
75 18 Ar 1894 127
76 2 He 1895 126
77 10 Ne 1898 123
78 36 Kr 1898 123
79 54 Xe 1898 123
80 84 Po 1898 123
81 88 Ra 1898 123
82 89 Ac 1899 122
83 86 Rn 1900 121
84 63 Eu 1901 120
85 71 Lu 1907 114
86 91 Pa 1913 108
87 72 Hf 1923 98
88 75 Re 1925 96
89 43 Tc 1937 84
90 87 Fr 1939 82
91 85 At 1940 81
92 93 Np 1940 81
93 94 Pu 1940 81
94 95 Am 1944 77
95 96 Cm 1944 77
96 61 Pm 1945 76
97 97 Bk 1949 72
98 98 Cf 1950 71
99 99 Es 1952 69
100 100 Fm 1952 69
101 101 Md 1955 66
102 102 No 1958 63
103 103 Lr 1961 60
104 104 Rf 1964 57
105 105 Db 1967 54
106 106 Sg 1974 47
107 107 Bh 1981 40
108 109 Mt 1982 39
109 108 Hs 1984 37
110 110 Ds 1994 27
111 111 Rg 1994 27
112 112 Cn 1996 25
113 114 Fl 1998 23
114 116 Lv 2000 21
115 113 Nh 2004 17
116 115 Mc 2004 17
117 118 Og 2006 15
118 117 Ts 2010 11