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Alternative clues for the word atnos

• Chem. class data
• Chem. class figures
• 7 for N, 8 for O, etc.
• Periodic table figs.
• 92 and 53 for U and I
• 5 for B and 6 for C
• 1 for H and 2 for He, e.g
• Proton counts: Abbr
• Periodic law figs.