Answer: ATNOS

Possible questions:


Periodic table figs. we know 1 Answer
Chem. class figures we know 1 Answer
1 for H and 2 for He, e.g. we know 1 Answer
Proton counts: Abbr. we know 1 Answer
Periodic law figs. we know 1 Answer
Element info: abbr. we know 1 Answer
B and O figures: Abbr. we know 1 Answer
92 for U and 53 for I: Abbr. we know 1 Answer
7 for N, 8 for O, etc. we know 1 Answer

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