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Table 3 Statistics for elements potentially originating from misperceived abbreviations in PubChem Substance and Compound

From: PubChem atom environments

Atomic symbol Atom types Atom environments
r = 0 r = 1 r = 2 r = 3
Sbst Cmpd Sbst Cmpd Sbst Cmpd Sbst Cmpd
V 157 25 4,818 232 16,194 656 25,686 1,170
Rb 28 4 1,388 7 9,054 9 19,098 12
Y 80 10 7,432 24 57,213 47 1,16,554 78
Rh 102 21 3,133 71 9,231 122 14,561 167
W 25 31 6,280 439 28,382 2,462 47,976 5,116
Re 126 21 2,413 81 8,004 116 12,587 140
Po 13 6 76 58 182 154 247 214
Ra 12 3 1,527 7 11,355 9 24,073 9
Ac 18 1 395 3,919 15,461
U 101 21 2,744 59 9,419 77 14,791 74
Rf 17 1 957 4,211 7,681
  1. Elements are ordered by atomic number. For each combination of repository and radius, the number of unique fragments containing the respective atom element is listed. Substance and Compound are abbreviated as ‘Sbst’ and ‘Cmpd’, respectively.